Santosa & Dyer. (1997). Petua meningkatkan kualiti diri. Thinker's Library.
Chicago Style (17th ed.) CitationSantosa and Dyer. Petua Meningkatkan Kualiti Diri. Kuala Lumpur: Thinker's Library, 1997.
MLA (8th ed.) CitationSantosa and Dyer. Petua Meningkatkan Kualiti Diri. Thinker's Library, 1997.
Warning: These citations may not always be 100% accurate.