APA (7th ed.) Citation

Steen, J. C. v. d. (1960). Zes Weken in de Rocky Mountains ([Sonderdr.].).

Chicago Style (17th ed.) Citation

Steen, J. C. van der. Zes Weken in De Rocky Mountains. [Sonderdr.]. 1960.

MLA (9th ed.) Citation

Steen, J. C. van der. Zes Weken in De Rocky Mountains. [Sonderdr.]. 1960.

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