Cita APA (7a ed.)

Taylor, H. F., & Haas, W. (1986). German, a self-teaching guide. Wiley.

Cita Chicago Style (17a ed.)

Taylor, Heimy F., y Werner Haas. German, a Self-teaching Guide. New York: Wiley, 1986.

Cita MLA (9a ed.)

Taylor, Heimy F., y Werner Haas. German, a Self-teaching Guide. Wiley, 1986.