APA (7th ed.) Citation

Petri, B., Wagner, E., & Wilhelm, S. (1998). memo 38.

Chicago Style (17th ed.) Citation

Petri, Barbara, Ellen Wagner, and Susanne Wilhelm. Memo 38. Wiesbaden, 1998.

MLA (8th ed.) Citation

Petri, Barbara, et al. Memo 38. 1998.

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