APA (7th ed.) Citation

Spengler, J. J. (1972). Population economics; selected essays of Joseph J. Spengler.

Chicago Style (17th ed.) Citation

Spengler, Joseph John. Population Economics; Selected Essays of Joseph J. Spengler. Durham, N.C., Duke University Press, 1972.

MLA (9th ed.) Citation

Spengler, Joseph John. Population Economics; Selected Essays of Joseph J. Spengler. 1972.

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