APA (7th ed.) Citation

Hacker, H., & Peks, H. (1990). Esperiana: Buchreihe zur Entomologie. Delta Druck u. Verlag Inh. Heinz Peks.

Chicago Style (17th ed.) Citation

Hacker, Hermann, and Heinz Peks. Esperiana: Buchreihe Zur Entomologie. Schwanfeld: Delta Druck u. Verlag Inh. Heinz Peks, 1990.

MLA (9th ed.) Citation

Hacker, Hermann, and Heinz Peks. Esperiana: Buchreihe Zur Entomologie. Delta Druck u. Verlag Inh. Heinz Peks, 1990.

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