Gaya APA

Mapping, A, C, O, S, A. (1971). Surveying and Mapping, Vol. XXXI, No.2 June 1971 . : benjamin franklin staton.

Gaya MLA

Mapping, American, Congress, On, Surveying, And. "Surveying and Mapping, Vol. XXXI, No.2 June 1971". : benjamin franklin staton, 1971. Text.