Gaya APA

Thralls, Z, A., Swanson, C, P. (1958). Teaching of geography . New York: New York: Appleton-Century-Crofts; 1958.

Gaya MLA

Thralls, Zoe, A.., Swanson, Carl, P.. "Teaching of geography". New York: New York: Appleton-Century-Crofts; 1958, 1958. Text.