APA aipamena

Elsworth, S., & Walker, E. (1986). Grammar practice for intermediate students.

Chicago Style aipamena

Elsworth, Steve, and Elaine Walker. Grammar Practice for Intermediate Students. Hyderabad, Orient Longman, 1986.

MLA aipamena

Elsworth, Steve, and Elaine Walker. Grammar Practice for Intermediate Students. 1986.