Gaya APA
Johannsen, K, L. et al (2006).
Advanced WORLD PASS Expanding English Fluency : Teacher's Resourse Book .
United States:
Thomson.
Gaya MLA
Johannsen, Kristin, L.. et al.
"Advanced WORLD PASS Expanding English Fluency : Teacher's Resourse Book".
United States:
Thomson,
2006.
Text.