APA Citation

Zahran, M. A., & Willis, A. J. 1. The vegetation of Egypt (First edition.).

Chicago Style Citation

Zahran, M. A.,, and A. J. 1922-2006 Willis. The Vegetation of Egypt. First edition.

MLA Citation

Zahran, M. A.,, and A. J. 1922-2006 Willis. The Vegetation of Egypt. First edition.

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