Stern, D. (2009). Competencies for science librarians. Routledge.
Chicago Style aipamenaStern, David. Competencies for Science Librarians. London: Routledge, 2009.
MLA aipamenaStern, David. Competencies for Science Librarians. Routledge, 2009.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.