A practical English grammar.

MLA

Thomson, Audrey Jean, and Agnes V Martinet. A Practical English Grammar. 4th edition Oxford: University Press, 1995.

APA

Thomson, A. Jean, & Martinet, A. V. (1995). A practical English grammar. 4th edition Oxford: University Press.

Chicago

Thomson, Audrey Jean, and Agnes V. Martinet. A Practical English Grammar. 4th edition Oxford: University Press, 1995.