(1992). Geology. WCB.
Chicago Style (17th ed.) CitationGeology. Dubuque: WCB, 1992.
MLA (9th ed.) CitationGeology. WCB, 1992.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.
(1992). Geology. WCB.
Chicago Style (17th ed.) CitationGeology. Dubuque: WCB, 1992.
MLA (9th ed.) CitationGeology. WCB, 1992.