Lewis, H. (2012). Body language: A guide for professionals (3rd ed.). Sage.
Chicago Style aipamenaLewis, Hedwig. Body Language: A Guide for Professionals. 3rd ed. New Delhi: Sage, 2012.
MLA aipamenaLewis, Hedwig. Body Language: A Guide for Professionals. 3rd ed. Sage, 2012.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.