Gaya APA

Tan, D, B, Y. (2000). Federal Thematic Excercises: English Primary [4] (Cet. 1.--). Singapore: Federal Publications.

Gaya MLA

Tan, David, B., Y.. "Federal Thematic Excercises: English Primary [4]". Cet. 1.-- Singapore: Federal Publications, 2000. Text.