APA (7th ed.) Citation

Hövell tot Westerflier, L., Schmoller, T., & Frigge, K. (1993). Sample book of Seymour. F. Knuf.

Chicago Style (17th ed.) Citation

Hövell tot Westerflier, Lietje, Tanya Schmoller, and Karli Frigge. Sample Book of Seymour. [Buren]: F. Knuf, 1993.

MLA (9th ed.) Citation

Hövell tot Westerflier, Lietje, et al. Sample Book of Seymour. F. Knuf, 1993.