APA Edition Citation

Spengler, J. J., & Duncan, O. D. (1956). Population theory and policy: Selected readings.

Chicago Edition Citation

Spengler, Joseph J., and Otis Dudley Duncan. Population Theory and Policy: Selected Readings. 1956.

MLA Edition Citation

Spengler, Joseph J., and Otis Dudley Duncan. Population Theory and Policy: Selected Readings. 1956.

Warning: These citations may not always be 100% accurate.