APA (7th ed.) Citation

Degenhardt, G., Neubauer, F., & Sandig, C. (1988). Graphik.

Chicago Style (17th ed.) Citation

Degenhardt, Gertrude, Frank Neubauer, and Christoph Sandig. Graphik. Leipzig, 1988.

MLA (8th ed.) Citation

Degenhardt, Gertrude, et al. Graphik. 1988.