Παραπομπή APA

Ziegler, E., & Erich Ziegler, H. Z. (1998). Flavourings. Wiley.

Παραπομπή Chicago Style

Ziegler, Erich, και Herta Ziegler Erich Ziegler. Flavourings. New York: Wiley, 1998.

Παραπομπή MLA

Ziegler, Erich, και Herta Ziegler Erich Ziegler. Flavourings. Wiley, 1998.