Gaya APA

Ghaleb, E. (1986). Encyclopedie Des Sciences De La Nature - Encyclopedia of Natural Sciences, jilid II . Beirut: Dar El-Machreq Sarl.

Gaya MLA

Ghaleb, Edouard. "Encyclopedie Des Sciences De La Nature - Encyclopedia of Natural Sciences, jilid II". Beirut: Dar El-Machreq Sarl, 1986. Text.