APA (7th ed.) Citation

Hagboldt, P. H., Kaufmann, F., & Leopold, W. (1962). Concise German course. D.C. Heath.

Chicago Style (17th ed.) Citation

Hagboldt, Peter Herman, F.W Kaufmann, and W.F Leopold. Concise German Course. Boston: D.C. Heath, 1962.

MLA (9th ed.) Citation

Hagboldt, Peter Herman, et al. Concise German Course. D.C. Heath, 1962.