APA (7th ed.) Citation

Homberger, C. P., & Ebelke, J. F. (1964). Foundation course in German. D. C. Heath.

Chicago Style (17th ed.) Citation

Homberger, Conrad P., and John F. Ebelke. Foundation Course in German. Boston: D. C. Heath, 1964.

MLA (9th ed.) Citation

Homberger, Conrad P., and John F. Ebelke. Foundation Course in German. D. C. Heath, 1964.