APA (7th ed.) Citation

Phythian, B. A., & Humphreys, G. (1980). English grammar / B.A. Phythian (Rev. ed.). Hodder & Stoughton.

Chicago Style (17th ed.) Citation

Phythian, B. A., and Gordon Humphreys. English Grammar / B.A. Phythian. Rev. ed. Sevenoaks: Hodder & Stoughton, 1980.

MLA (9th ed.) Citation

Phythian, B. A., and Gordon Humphreys. English Grammar / B.A. Phythian. Rev. ed. Hodder & Stoughton, 1980.

Warning: These citations may not always be 100% accurate.