APA (7th ed.) Citation

Lenroot-Ernt, L., & Darnay, B. T. (1982). Directory of special libraries and information centers in the United States and Canada (7th ed.). Gale Research Co.

Chicago Style (17th ed.) Citation

Lenroot-Ernt, Lois, and Brigitte T. Darnay. Directory of Special Libraries and Information Centers in the United States and Canada. 7th ed. Detroit, Mich: Gale Research Co, 1982.

MLA (9th ed.) Citation

Lenroot-Ernt, Lois, and Brigitte T. Darnay. Directory of Special Libraries and Information Centers in the United States and Canada. 7th ed. Gale Research Co, 1982.