APA

Philby B., . (1977). Arabia of the Wahhabis. London: Frank Cass.

Chicago

Philby B, . 1977. Arabia of the Wahhabis. London: Frank Cass.

Harvard

Philby B., . (1977). Arabia of the Wahhabis. London: Frank Cass.

MLA

Philby B, . Arabia of the Wahhabis. London: Frank Cass. 1977.