Gaya APA

Swanson, C, P., Wolfson, M. (NULL). Changing approaches to population problem . New: New Delhi: Oxford 7 Ibh Pubishing Co.; 1978.

Gaya MLA

Swanson, Carl, P.., Wolfson, Margaret. "Changing approaches to population problem". New: New Delhi: Oxford 7 Ibh Pubishing Co.; 1978, NULL. Text.