Cita APA (7a ed.)

Petroff, T., & Clary, J. T. (1990). Softball hitting: Fast and slow pitch. Athletic Institute.

Cita Chicago Style (17a ed.)

Petroff, Tom, y Jack T. Clary. Softball Hitting: Fast and Slow Pitch. North Palm Beach, Fla.: Athletic Institute, 1990.

Cita MLA (9a ed.)

Petroff, Tom, y Jack T. Clary. Softball Hitting: Fast and Slow Pitch. Athletic Institute, 1990.