Hill, N. (1960). Think and grow rich. Fawcett Crest.
Chicago Style (17th ed.) ZitazioaHill, Napoleon. Think and Grow Rich. New York: Fawcett Crest, 1960.
MLA (9th ed.) ZitazioaHill, Napoleon. Think and Grow Rich. Fawcett Crest, 1960.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.