Hede, A. A., & Ziskind, S. (1977). Reference readiness: A manual for librarians and students (2nd ed. and enl.). Linnet Books.
Citazione stile Chigago Style (17a edizione)Hede, Agnes Ann, e Sylvia Ziskind. Reference Readiness: A Manual for Librarians and Students. 2nd ed. and enl. [Hamden, Conn.]: Linnet Books, 1977.
Citatione MLA (9a ed.)Hede, Agnes Ann, e Sylvia Ziskind. Reference Readiness: A Manual for Librarians and Students. 2nd ed. and enl. Linnet Books, 1977.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.