APA Style

Putri, Ratna Setyomati. (2006). Smile 1 (Student'S Book) Learning English . Jakarta: Erlangga.

Chicago Style

Putri, Ratna Setyomati. Smile 1 (Student'S Book) Learning English. Jakarta: Erlangga, 2006. Printed Book.

MLA Style

Putri, Ratna Setyomati. Smile 1 (Student'S Book) Learning English. Jakarta: Erlangga, 2006. Printed Book.

Turabian Style

Putri, Ratna Setyomati. Smile 1 (Student'S Book) Learning English. Jakarta: Erlangga, 2006. Printed Book.