APA (7th ed.) Citation

Gast, W., Steiner, H., & Mayer, D. (1986). Lesebuch. Diesterweg.

Chicago Style (17th ed.) Citation

Gast, Wolfgang, Helmut Steiner, and Dieter Mayer. Lesebuch. Frankfurt am Main [u.a.]: Diesterweg, 1986.

MLA (9th ed.) Citation

Gast, Wolfgang, et al. Lesebuch. Diesterweg, 1986.