APA Style

Ng, Y, Y. (2022). New! Music Theory for Young Musicians Grade 2 4th Edition (4th edition). Malaysia: Poco Studio Sdn Bhd.

MLA Style

Ng, Ying, Ying. "New! Music Theory for Young Musicians Grade 2 4th Edition". 4th edition Malaysia: Poco Studio Sdn Bhd, 2022. Textbook.