Needham, J. (1991). Self mastery through neuro-linguistic programming. HRD Management Services.
Chicago Style aipamenaNeedham, James. Self Mastery Through Neuro-linguistic Programming. Makati, Metro Manila: HRD Management Services, 1991.
MLA aipamenaNeedham, James. Self Mastery Through Neuro-linguistic Programming. HRD Management Services, 1991.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.