APA (7th ed.) Citation

Nieschalk, A., & Nieschalk, C. (1980). Beiträge zur Orchideenflora Spaniens ([Sonderdr.].).

Chicago Style (17th ed.) Citation

Nieschalk, Albert, and Charlotte Nieschalk. Beiträge Zur Orchideenflora Spaniens. [Sonderdr.]. 1980.

MLA (9th ed.) Citation

Nieschalk, Albert, and Charlotte Nieschalk. Beiträge Zur Orchideenflora Spaniens. [Sonderdr.]. 1980.

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