APA (7th ed.) Citation

Crossgrove, H., Crossgrove, W. C., & Hagboldt, P. (1978). Graded German reader: Erste Stufe (2. ed.). Heath.

Chicago Style (17th ed.) Citation

Crossgrove, Hannelore, William C. Crossgrove, and Peter Hagboldt. Graded German Reader: Erste Stufe. 2. ed. Lexington, Mass: Heath, 1978.

MLA (9th ed.) Citation

Crossgrove, Hannelore, et al. Graded German Reader: Erste Stufe. 2. ed. Heath, 1978.