APA (7th ed.) Citation

Küntscher, G., & Altner, P. C. (1974). The callus-problem. W. H. Green.

Chicago Style (17th ed.) Citation

Küntscher, Gerhard, and Peter C. Altner. The Callus-problem. St. Louis: W. H. Green, 1974.

MLA (9th ed.) Citation

Küntscher, Gerhard, and Peter C. Altner. The Callus-problem. W. H. Green, 1974.