Gaya APA

WITHTAKER, J. (1956). INTERDUKTORY ECONOMIC GEOGRAPI (3). New York: HARCOURT,BRACE & WORLD.

Gaya MLA

WITHTAKER, J.RUSSEL. "INTERDUKTORY ECONOMIC GEOGRAPI". 3 New York: HARCOURT,BRACE & WORLD, 1956. Text.