APA

HOWLING R. T., ALEX R. T. & ESKEY D. E. (1963). ENGLISH THROUGH PATTERNS. beirut: khayats.

Chicago

HOWLING ROBERT T, ALEX ROBERT T and ESKEY DAVID E. 1963. ENGLISH THROUGH PATTERNS. beirut: khayats.

Harvard

HOWLING R. T., ALEX R. T. and ESKEY D. E. (1963). ENGLISH THROUGH PATTERNS. beirut: khayats.

MLA

HOWLING ROBERT T, ALEX ROBERT T and ESKEY DAVID E. ENGLISH THROUGH PATTERNS. beirut: khayats. 1963.