Παραπομπή APA

Marshall & Nelson H M Bhatt, P. (1990). Structures (3nd ed.). English Language Book Society.

Παραπομπή Chicago Style

Marshall και P. Nelson H M Bhatt. Structures. 3nd ed. England: English Language Book Society, 1990.

Παραπομπή MLA

Marshall και P. Nelson H M Bhatt. Structures. 3nd ed. English Language Book Society, 1990.