Gaya APA
Sudrajat, E. et al (2003).
Telephone ( English For Special Purposes : Conversational Approach ) .
Jakarta:
Kesaint Blanc.
Gaya MLA
Sudrajat, Erman. et al.
"Telephone ( English For Special Purposes : Conversational Approach )".
Jakarta:
Kesaint Blanc,
2003.
Text.