APA

Al - Khatib A. S., . (1990). A New Dictionary of Petroleum and the oil industry. Beirut: Librairie du Liban.

Chicago

Al - Khatib Ahmad Sh, . 1990. A New Dictionary of Petroleum and the oil industry. Beirut: Librairie du Liban.

Harvard

Al - Khatib A. S., . (1990). A New Dictionary of Petroleum and the oil industry. Beirut: Librairie du Liban.

MLA

Al - Khatib Ahmad Sh, . A New Dictionary of Petroleum and the oil industry. Beirut: Librairie du Liban. 1990.