APA

Monkhouse F. . J., Small J. & Al - Khatib A. . S. (1990). A Dictionary of the Natural Environment. Beirut: Linrairie Duliban.

Chicago

Monkhouse F J, Small John and Al - Khatib A Sh. 1990. A Dictionary of the Natural Environment. Beirut: Linrairie Duliban.

Harvard

Monkhouse F. . J., Small J. and Al - Khatib A. . S. (1990). A Dictionary of the Natural Environment. Beirut: Linrairie Duliban.

MLA

Monkhouse F J, Small John and Al - Khatib A Sh. A Dictionary of the Natural Environment. Beirut: Linrairie Duliban. 1990.