APA (7th ed.) Citation

Haupt, H., & Wesselborg, I. (1990). Sekretariatspraxis heute. Winklers.

Chicago Style (17th ed.) Citation

Haupt, Heinz, and Inge Wesselborg. Sekretariatspraxis Heute. Darmstadt: Winklers, 1990.

MLA (9th ed.) Citation

Haupt, Heinz, and Inge Wesselborg. Sekretariatspraxis Heute. Winklers, 1990.

Warning: These citations may not always be 100% accurate.