Gaya APA

Hageus, L, P, D, B, M, W, M. (1980). Comprehension Practice for Proficiency Work and Leisure . London: Heinemann Educational Books.

Gaya MLA

Hageus, Lennart, Peterson, David, Bolton, Michael, Walker, Mildred. "Comprehension Practice for Proficiency Work and Leisure". London: Heinemann Educational Books, 1980. .