APA (7th ed.) Citation

Waugh, L. R., & Rudy, S. (1991). New vistas in grammar: Invariance and variation. Benjamins.

Chicago Style (17th ed.) Citation

Waugh, Linda R., and Stephen Rudy. New Vistas in Grammar: Invariance and Variation. Amsterdam [etc.]: Benjamins, 1991.

MLA (9th ed.) Citation

Waugh, Linda R., and Stephen Rudy. New Vistas in Grammar: Invariance and Variation. Benjamins, 1991.