Gaya APA
Rahardi, K., Indrojiono, . (2007).
Communicative Englis for Business and Public Relations Services (1).
Yogyakarta:
Amara Books.
Gaya MLA
Rahardi, Kunjana., Indrojiono, .
"Communicative Englis for Business and Public Relations Services".
1
Yogyakarta:
Amara Books,
2007.
Text.