APA (7th ed.) Citation

Special Libraries Association Committee on Microfilming and Documentation. (1947). Directory of microfilm services in the United States and Canada (Rev. ed.).

Chicago Style (17th ed.) Citation

Special Libraries Association Committee on Microfilming and Documentation. Directory of Microfilm Services in the United States and Canada. Rev. ed. New York, 1947.

MLA (9th ed.) Citation

Special Libraries Association Committee on Microfilming and Documentation. Directory of Microfilm Services in the United States and Canada. Rev. ed. 1947.