Gaya APA

Putri, R, S., Yojani, F, R. (2006). SMILE, Smart Move in Learning English 4 for Elementary School Fourth Grade: Student's Boook . Jakarta: ESIS.

Gaya MLA

Putri, Ratna, Setyowati., Yojani, Fidelia, Ratri. "SMILE, Smart Move in Learning English 4 for Elementary School Fourth Grade: Student's Boook". Jakarta: ESIS, 2006. Text.