Engstrand, I. W. (1982). Serra's San Diego: Father Junípero Serra and California's beginnings. San Diego Historical Society.
Chicago-referens (17:e uppl.)Engstrand, Iris Wilson. Serra's San Diego: Father Junípero Serra and California's Beginnings. San Diego, Calif.: San Diego Historical Society, 1982.
MLA-referens (8:e uppl.)Engstrand, Iris Wilson. Serra's San Diego: Father Junípero Serra and California's Beginnings. San Diego Historical Society, 1982.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.