Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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