APA Citation

W.Keller. (1983). Der Kosmos-Schmetterlings-führer.

Chicago Style Citation

W.Keller. Der Kosmos-Schmetterlings-führer. 1983.

MLA Citation

W.Keller. Der Kosmos-Schmetterlings-führer. 1983.

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