APA (7th ed.) Citation

Posner, R., Green, J. N., & Ayres-Bennett, W. (1990). Variation and change in French: Essays presented to Rebecca Posner on the occasion of her sixtieth birthday. Routledge.

Chicago Style (17th ed.) Citation

Posner, Rebecca, John N. Green, and Wendy Ayres-Bennett. Variation and Change in French: Essays Presented to Rebecca Posner on the Occasion of Her Sixtieth Birthday. London ; New York: Routledge, 1990.

MLA (9th ed.) Citation

Posner, Rebecca, et al. Variation and Change in French: Essays Presented to Rebecca Posner on the Occasion of Her Sixtieth Birthday. Routledge, 1990.