APA Style

Akhmadi, Ali, Safrida, Ida. (2007). Smart steps: the smartest way to learn English (cet. 1). Jakarta: Geneca Exact.

Chicago Style

Akhmadi, Ali, Safrida, Ida. Smart steps: the smartest way to learn English. cet. 1 Jakarta: Geneca Exact, 2007. Buku SMP Athalia.

MLA Style

Akhmadi, Ali, Safrida, Ida. Smart steps: the smartest way to learn English. cet. 1 Jakarta: Geneca Exact, 2007. Buku SMP Athalia.

Turabian Style

Akhmadi, Ali, Safrida, Ida. Smart steps: the smartest way to learn English. cet. 1 Jakarta: Geneca Exact, 2007. Buku SMP Athalia.