APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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