APA (7th ed.) Citation

Siebert, D., & Vogel, O. H. How to improve your baseball. Athletic Institute.

Chicago Style (17th ed.) Citation

Siebert, Dick, and Otto H. Vogel. How to Improve Your Baseball. Chicago, Ill.: Athletic Institute.

MLA (8th ed.) Citation

Siebert, Dick, and Otto H. Vogel. How to Improve Your Baseball. Athletic Institute.