APA (7th ed.) Citation

Betz, F., & Holzwarth, C. H. (1933). A second German book. American book company.

Chicago Style (17th ed.) Citation

Betz, Frederick, and Charles Homer Holzwarth. A Second German Book. New York: American book company, 1933.

MLA (9th ed.) Citation

Betz, Frederick, and Charles Homer Holzwarth. A Second German Book. American book company, 1933.