APA

Betts R. B., . (1978). Christians in the Arab east. London: S . P . C . K.

Chicago

Betts Robert Brenton, . 1978. Christians in the Arab east. London: S . P . C . K.

Harvard

Betts R. B., . (1978). Christians in the Arab east. London: S . P . C . K.

MLA

Betts Robert Brenton, . Christians in the Arab east. London: S . P . C . K. 1978.