APA (7e ed.) Bronvermelding

Geological Survey (U.S.)\nNational Earthquake Information Center. (1967). Earthquake Information Bulletin. National Earthquake Information Center.

Chicago (17e ed.) Bronvermelding

Geological Survey (U.S.)\nNational Earthquake Information Center. Earthquake Information Bulletin. Rockville, Md: National Earthquake Information Center, 1967.

MLA (8e ed.) Bronvermelding

Geological Survey (U.S.)\nNational Earthquake Information Center. Earthquake Information Bulletin. National Earthquake Information Center, 1967.

Let op: Deze citaties zijn niet altijd 100% accuraat.