Gaya APA
Akhmadi, Ali, Safrida, Ida. (2007).
Smart Steps Grade IX .
Jakarta:
Ganeca Exact.
Gaya Chicago
Akhmadi, Ali, Safrida, Ida.
Smart Steps Grade IX.
Jakarta:
Ganeca Exact,
2007.
Text.
Gaya MLA
Akhmadi, Ali, Safrida, Ida.
Smart Steps Grade IX.
Jakarta:
Ganeca Exact,
2007.
Text.
Gaya Turabian
Akhmadi, Ali, Safrida, Ida.
Smart Steps Grade IX.
Jakarta:
Ganeca Exact,
2007.
Print.