Gaya APA

ERIC, J, H. (1978). SUGESTIONS TO AUTHORS OF THE REPORTS OF THE UNITED STATES GEOLOGICAL SURVEY (SIXTH EDITION). Washington, DC: U.S GOVERMENT.

Gaya MLA

ERIC, JOHN, H.. "SUGESTIONS TO AUTHORS OF THE REPORTS OF THE UNITED STATES GEOLOGICAL SURVEY". SIXTH EDITION Washington, DC: U.S GOVERMENT, 1978. Textbook.