APA (7th ed.) Citation

Gruber, D., & Dunn, V. (1987). Writing: Elementary. Oxford University Press.

Chicago Style (17th ed.) Citation

Gruber, Diann, and Viviane Dunn. Writing: Elementary. Oxford [etc.]: Oxford University Press, 1987.

MLA (9th ed.) Citation

Gruber, Diann, and Viviane Dunn. Writing: Elementary. Oxford University Press, 1987.