APA stil citiranja
Potter, J. G. F. (1989). Gradatim: Gradatim : a progressive course in unseen and comprehension passages ([Reprinted].). Oxford: Oxford University Press.
Chicago stil citiranjaPotter, J. G. F. Gradatim: Gradatim : a progressive course in unseen and comprehension passages. [Reprinted]. Oxford: Oxford University Press, 1989.
MLA stil citiranjaPotter, J. G. F. Gradatim: Gradatim : a progressive course in unseen and comprehension passages. [Reprinted]. Oxford: Oxford University Press, 1989.
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