APA
Curiculum Development Institute Of Singapore, . (1993). Primary Mathematics 4A. Singapur: Federal Publications.
Chicago
Curiculum Development Institute Of Singapore, . 1993. Primary Mathematics 4A. Singapur: Federal Publications.
Harvard
Curiculum Development Institute Of Singapore, . (1993). Primary Mathematics 4A. Singapur: Federal Publications.
MLA
Curiculum Development Institute Of Singapore, . Primary Mathematics 4A. Singapur: Federal Publications. 1993.
