Schafer, W. E. (2000). Stress management for wellness (4th ed.). Thomson/Wadsworth.
Chicago Style (17th ed.) ZitazioaSchafer, Walter E. Stress Management for Wellness. 4th ed. Australia: Thomson/Wadsworth, 2000.
MLA (9th ed.) ZitazioaSchafer, Walter E. Stress Management for Wellness. 4th ed. Thomson/Wadsworth, 2000.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.