Landsberg, M. (1999). The Tao of Motivation: Inspire yourself and others. London: Harper Collins Business.
Chicago Style aipamenaLandsberg, Max. The Tao of Motivation: Inspire Yourself and Others. London: Harper Collins Business, 1999.
MLA aipamenaLandsberg, Max. The Tao of Motivation: Inspire Yourself and Others. London: Harper Collins Business, 1999.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.