APA (7th ed.) Citation

Keller, G. (1976). Discus. T.F.H..

Chicago Style (17th ed.) Citation

Keller, Gunter. Discus. Neptune City ; Reigate: T.F.H., 1976.

MLA (9th ed.) Citation

Keller, Gunter. Discus. T.F.H., 1976.