APA (7th ed.) Citation

National Information Standards Organization (U.S.) & American National Standards Institute. (1995). Information retrieval (Z39.50): Application service definition and protocol specification : approved May 10, 1995 by the American National Standards Institute. NISO Press.

Chicago Style (17th ed.) Citation

National Information Standards Organization (U.S.) and American National Standards Institute. Information Retrieval (Z39.50): Application Service Definition and Protocol Specification : Approved May 10, 1995 by the American National Standards Institute. Bethesda, Md.: NISO Press, 1995.

MLA (9th ed.) Citation

National Information Standards Organization (U.S.) and American National Standards Institute. Information Retrieval (Z39.50): Application Service Definition and Protocol Specification : Approved May 10, 1995 by the American National Standards Institute. NISO Press, 1995.