APA استشهاد

Keilhau, W. (1952). Principles of private and public planning.

استشهاد بنمط شيكاغو

Keilhau, Wilhelm. Principles of Private and Public Planning. Burt Franklin, New York, 1952.

MLA استشهاد

Keilhau, Wilhelm. Principles of Private and Public Planning. 1952.