Gaya APA

Swanson, C, P., Beck, S, D. (1963). **Animal photoperiodism relationship of daylength to animal growth, ì development, and behavior . New York: New York: Holt, Rinehart and Winston; 1963..

Gaya MLA

Swanson, Carl, P.., Beck, Stanley, D.. "**Animal photoperiodism relationship of daylength to animal growth, ì development, and behavior". New York: New York: Holt, Rinehart and Winston; 1963., 1963. Text.