Gaya APA

Swanson, C, P., Freedman, R. (1964). **Population the vital revolution . New York: New York: Doubleday & Co; 1964.

Gaya MLA

Swanson, Carl, P.., Freedman, Ronald. "**Population the vital revolution". New York: New York: Doubleday & Co; 1964, 1964. Text.