APA (7th ed.) Citation

Steele, J. M. (2011). Goal-Year Periods and Their Use in Predicting Planetary Phenomena.

Chicago Style (17th ed.) Citation

Steele, John M. Goal-Year Periods and Their Use in Predicting Planetary Phenomena. 2011.

MLA (8th ed.) Citation

Steele, John M. Goal-Year Periods and Their Use in Predicting Planetary Phenomena. 2011.

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