APA (7th ed.) Citation

Hopper, V. F. (1975). English verb conjugation: 123 irreg. verbs fully conjugated: tense, mood, number. Barron.

Chicago Style (17th ed.) Citation

Hopper, Vincent F. English Verb Conjugation: 123 Irreg. Verbs Fully Conjugated: Tense, Mood, Number. Woodbury, N.Y: Barron, 1975.

MLA (9th ed.) Citation

Hopper, Vincent F. English Verb Conjugation: 123 Irreg. Verbs Fully Conjugated: Tense, Mood, Number. Barron, 1975.