Step across the border [1990]

MLA

Humbert, Nicolas, and Werner Penzel. Step Across the Border [1990]. München: Winter & Winter, 2003.

APA

Humbert, N., & Penzel, W. (2003). Step across the border [1990]. München: Winter & Winter.

Chicago

Humbert, Nicolas, and Werner Penzel. Step across the Border [1990]. München: Winter & Winter, 2003.