American Library Association. Circulation Control Committee. (1970). Circulation policies of academic libraries in the United States, 1968. Library Administration Division, American Library Association.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAmerican Library Association. Circulation Control Committee. Circulation Policies of Academic Libraries in the United States, 1968. Chicago: Library Administration Division, American Library Association, 1970.
एमएलए (9वां संस्करण) प्रशस्ति पत्रAmerican Library Association. Circulation Control Committee. Circulation Policies of Academic Libraries in the United States, 1968. Library Administration Division, American Library Association, 1970.
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