APA

McColvin L. R., .Public library extension. Paris, United Nations Educational, Scientific and Cultural Organization. s. l. s. n: 1949.

Chicago

McColvin Lionel Roy, .Public library extension. Paris, United Nations Educational, Scientific and Cultural Organization. s. l. s. n: 1949.

Harvard

McColvin L. R., .Public library extension. Paris, United Nations Educational, Scientific and Cultural Organization. s. l. s. n: 1949.

MLA

McColvin Lionel Roy, .s. l. s. n: 1949. .