APA (7th ed.) Citation

Van Boxem, H., Williame, F., & Naets, L. (1991). Ekologisch tunieren. Wommelgem: Velt.

Chicago Style (17th ed.) Citation

Van Boxem, Herman, Frank Williame, and Luk Naets. Ekologisch Tunieren. Wommelgem: Velt, 1991.

MLA (8th ed.) Citation

Van Boxem, Herman, et al. Ekologisch Tunieren. Wommelgem: Velt, 1991.