Hill. (2002). Napoleon Hill: 365 pelan tindakan positif. Thinker's Library.
Chicago Style (17th ed.) CitationHill. Napoleon Hill: 365 Pelan Tindakan Positif. Batu Caves: Thinker's Library, 2002.
MLA (9th ed.) CitationHill. Napoleon Hill: 365 Pelan Tindakan Positif. Thinker's Library, 2002.
Warning: These citations may not always be 100% accurate.