Bell, M. V., Bacon, J. C., & Hepler, J. C. (1957). Poole's index: Date and volume key. Association of College and Reference Libraries.
Citace podle Chicago (17th ed.)Bell, Marion V., Jean C. Bacon, a John C. Hepler. Poole's Index: Date and Volume Key. Chicago: Association of College and Reference Libraries, 1957.
Citace podle MLA (8th ed.)Bell, Marion V., et al. Poole's Index: Date and Volume Key. Association of College and Reference Libraries, 1957.
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