APA (7th ed.) Citation

Harz, K., & Kaltenbach, A. (1969). Die Orthopteren Europas. 1 - 3: = The Orthoptera of Europe. Junk.

Chicago Style (17th ed.) Citation

Harz, Kurt, and Alfred Kaltenbach. Die Orthopteren Europas. 1 - 3: = The Orthoptera of Europe. The Hague: Junk, 1969.

MLA (9th ed.) Citation

Harz, Kurt, and Alfred Kaltenbach. Die Orthopteren Europas. 1 - 3: = The Orthoptera of Europe. Junk, 1969.