Gaya APA
Ng, Y, Y. (2013).
Music Theory for Young Musicians Grade 4 : Study Notes with Exercises for ABRSM Theory Exams .
Malaysia:
Poco Studio.
Gaya MLA
Ng, Ying, Ying.
"Music Theory for Young Musicians Grade 4 : Study Notes with Exercises for ABRSM Theory Exams".
Malaysia:
Poco Studio,
2013.
Text.