Παραπομπή APA

Heap, B. W. (1968). Guide to Carrers And Courses. Wardlock Educational.

Παραπομπή Chicago Style

Heap, Brian W. Guide to Carrers And Courses. London: Wardlock Educational, 1968.

Παραπομπή MLA

Heap, Brian W. Guide to Carrers And Courses. Wardlock Educational, 1968.