APA Citation

Orzechowski, H. (1987). Unsere Welt: Umwelt - Unwelt. London: The World of Books.

Chicago Style Citation

Orzechowski, Harry. Unsere Welt: Umwelt - Unwelt. London: The World of Books, 1987.

MLA Citation

Orzechowski, Harry. Unsere Welt: Umwelt - Unwelt. London: The World of Books, 1987.

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