APA-referens (7:e uppl.)
Thompson, R., & Thompson, S. (2013). The hunt for iceberg erratics: Ice-rafted erratic boulders from the northern Rocky Mountains now residing in Northwest Oregon and Southwest Washington. Rick Thompson.
Chicago-referens (17:e uppl.)
Thompson, Rick, och Sylvia Thompson. The Hunt for Iceberg Erratics: Ice-rafted Erratic Boulders from the Northern Rocky Mountains Now Residing in Northwest Oregon and Southwest Washington. Portland: Rick Thompson, 2013.
MLA-referens (9:e uppl.)
Thompson, Rick, och Sylvia Thompson. The Hunt for Iceberg Erratics: Ice-rafted Erratic Boulders from the Northern Rocky Mountains Now Residing in Northwest Oregon and Southwest Washington. Rick Thompson, 2013.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.