Gaya APA

Swanson, C, P., Fitzpatrick, F, L. (1963). **Our animal resources animals and their economic importance . New York: New York: Holt, Rinehart and Winston; 1963..

Gaya MLA

Swanson, Carl, P.., Fitzpatrick, Frederick, L.. "**Our animal resources animals and their economic importance". New York: New York: Holt, Rinehart and Winston; 1963., 1963. Text.