Gaya APA
Suharto, G. (2005).
Being Competent In English for senior high school year XII : Language Programme .
Surakarta:
Mediatama.
Gaya MLA
Suharto, G..
"Being Competent In English for senior high school year XII : Language Programme".
Surakarta:
Mediatama,
2005.
Buku Paket.