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.