Mohd Yusof Hasan. (2004). Tiga dunia. Universiti Pendidikan Sultan Idris.
Chicago Style (17th ed.) CitationMohd Yusof Hasan. Tiga Dunia. Perak: Universiti Pendidikan Sultan Idris, 2004.
MLA (9th ed.) CitationMohd Yusof Hasan. Tiga Dunia. Universiti Pendidikan Sultan Idris, 2004.
Warning: These citations may not always be 100% accurate.