Gaya APA

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

Gaya MLA

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