APA (7th ed.) Citation

Hommelhoff, P. (1998). Peter Ulmer 65 Jahre. ZIP, 19(1), .

Chicago Style (17th ed.) Citation

Hommelhoff, Peter. "Peter Ulmer 65 Jahre." ZIP 19, no. 1 (1998).

MLA (9th ed.) Citation

Hommelhoff, Peter. "Peter Ulmer 65 Jahre." ZIP, vol. 19, no. 1, 1998.

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