APA Alıntı

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

Chicago Stili Alıntı

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

MLA Alıntı

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