*[http://saints.sqpn.com/saint-sigfrid/ Saints.SPQN.com: Saint Sigfrid of Sweden]*[http://theoniondome.com/2013/02/15/february-15-saints-of-the-day-onesimus-of-the-seventy-and-sigfrid-of-sweden/ The Onion Dome: February 15 Saints of the Day – Onesimus of the Seventy and Sigfrid of Sweden]*[http://sv.wikipedia.org/wiki/Sigfrid_(mission%C3%A4r) Wikipedia: Sigfrid (missionär)] In Swedish*[http://en.wikipedia.org/wiki/Sigfrid_of_Sweden Wikipedia: Sigfrid of Sweden]*[http://sv.wikipedia.org/wiki/Husaby Husabyvägen] In Swedish*[http://en.wikipedia.org/wiki/Winaman Wikipedia: Winaman]*[http://sv.wikipedia.org/wiki/Gunnar_Gr%C3%B6pe Wikipedia: Gunnar Gröpe] In Swedish*[http://www.catholic.org/saints/saint.php?saint_id=2150 Catholic Online: St. Winaman]*[http://www.sweden.orthodoxy.ru/old/Engelska/hagiography_en/st_sigfrid_of_sweden_en.html Russian Orthodox Church in Sweden: Saint Sigfrid of Växjö, Apostle of Sweden and its patron saint]*[http://www.orthodoxengland.org.uk/saintss.htm Orthodox Europe: Latin Saints of the Orthodox Patriarchate of Rome]*[http://www.saintpatrickdc.org/ss/0215.shtml#sigf St. Patrick Catholic Church: Saint of the Day: February 15]*[http://sv.wikipedia.org/wiki/Olof_Sk%C3%B6tkonung#Olof_Sk.C3.B6tkonungs_avs.C3.A4ttning_och_sista_.C3.A5r Wikipedia: Olof Skötkonung] In Swedish*[http://en.wikipedia.org/wiki/Olaf_Tryggvason Wikipedia: Olaf I of Norway]*[http://en.wikipedia.org/wiki/Diocese_of_Skara Wikipedia: Diocese of Skara]*[http://christianization.hist.cam.ac.uk/regions/sweden/sweden-eccl-org.html Sweden - Ecclesiastical organization]*[http://www.newadvent.org/cathen/16074b.htm New Advent: Ancient See of Skara]*[http://en.wikipedia.org/wiki/Adalbert_of_Hamburg Wikipedia: Adalbert of Hamburg]*[http://sv.wikipedia.org/wiki/Thurgot Wikipedia: Thurgot] In Swedish*[http://www.nyrups.dk/Historie/Gorm/Erobreren.htm Medieval Studies > IX. King Gorm Saga > IV. Gorm the Conqueror]*[http://kampgruppe-engel.blogspot.com/2013/03/gunnar-grope.html Kampgruppe Engel: Gunnar Gröpe]*Butler, Rev. Alban. The Lives of the Fathers, Martyrs, and Other Principal Saints. Volume II: February. February 15: St. Sigefride, or Sigfrid, Bishop, Apostle of Sweden. 1866. [http://www.bartleby.com/210/2/152.html]*[http://commonplacebookofsaints.blogspot.com/2010/02/sigge-st-sigfrid-of-vaxjo.html A Commonplace Book of Saints: Sigge: St. Sigfrid of Växjö]