APA (7th ed.) Citation

Wehling, H., Sperling, W., & Sperling, W. (1983). DDR. Kohlhammer.

Chicago Style (17th ed.) Citation

Wehling, Hans-Georg, Walter Sperling, and Walter Sperling. DDR. Stuttgart [u.a.]: Kohlhammer, 1983.

MLA (8th ed.) Citation

Wehling, Hans-Georg, et al. DDR. Kohlhammer, 1983.