Gaya APA
Wardiman, A. et al (2008).
English in focus 1: for grade VII Junior High School (SMP/ MTs) (2008).
Jakarta:
Pusat Perbukuan.
Gaya MLA
Wardiman, Artono. et al.
"English in focus 1: for grade VII Junior High School (SMP/ MTs)".
2008
Jakarta:
Pusat Perbukuan,
2008.
E-Book.