APA (7th ed.) Citation

ScienceDirect (Online service), Allen, H. B., & Linn, M. D. (1986). Dialect and language variation. Academic Press.

Chicago Style (17th ed.) Citation

ScienceDirect (Online service), Harold B. Allen, and Michael D. Linn. Dialect and Language Variation. Orlando, Fla.: Academic Press, 1986.

MLA (9th ed.) Citation

ScienceDirect (Online service), et al. Dialect and Language Variation. Academic Press, 1986.