Bala Subramaniam. (2001). Ekonomi Asas tingkatan 4 & 5 KBSM. Sasbadi.
Chicago Style (17th ed.) CitationBala Subramaniam. Ekonomi Asas Tingkatan 4 & 5 KBSM. Petaling Jaya: Sasbadi, 2001.
MLA (8th ed.) CitationBala Subramaniam. Ekonomi Asas Tingkatan 4 & 5 KBSM. Sasbadi, 2001.
Warning: These citations may not always be 100% accurate.