Frame, R. R., & Coyne, J. R. (1972). Certification of Public Librarians in the United States; A Detailed Summary of Legal and Voluntary Certification Plans for Public Librarians Based on Information Supplied by the Various Certificating State Agencies or other Appropriate Sources, 2nd Edition.
Chicago Style (17th ed.) CitationFrame, Ruth R., and John R. Coyne. Certification of Public Librarians in the United States; A Detailed Summary of Legal and Voluntary Certification Plans for Public Librarians Based on Information Supplied by the Various Certificating State Agencies or Other Appropriate Sources, 2nd Edition. 1972.
MLA (9th ed.) CitationFrame, Ruth R., and John R. Coyne. Certification of Public Librarians in the United States; A Detailed Summary of Legal and Voluntary Certification Plans for Public Librarians Based on Information Supplied by the Various Certificating State Agencies or Other Appropriate Sources, 2nd Edition. 1972.