Gaya APA

Putri, R, S., Fitria, I. (2008). Smile (Smart Move in Learning English) [4] : For Elementary School Fourth Grade (Cet. 1.--). Jakarta: Esis.

Gaya MLA

Putri, Ratna, Setyowati., Fitria, Indah. "Smile (Smart Move in Learning English) [4] : For Elementary School Fourth Grade". Cet. 1.-- Jakarta: Esis, 2008. Text.