APA (7th ed.) Citation

Roberts, P. (1968). Modern grammar. Harcourt, Brace & World.

Chicago Style (17th ed.) Citation

Roberts, Paul. Modern Grammar. New York [etc.]: Harcourt, Brace & World, 1968.

MLA (9th ed.) Citation

Roberts, Paul. Modern Grammar. Harcourt, Brace & World, 1968.

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