APA Citation

Knowles, R. L., & Knowles, R. L. (1981). Sun rhythm form. Cambridge, Mass.

Chicago Style Citation

Knowles, Ralph L., and Ralph L. Knowles. Sun Rhythm Form. Cambridge, Mass, 1981.

MLA Citation

Knowles, Ralph L., and Ralph L. Knowles. Sun Rhythm Form. Cambridge, Mass, 1981.

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