Gaya APA
Sholikhah, I, M. et al (2000,2002).
Exploring Grammar In Context: Upper-intermediate And Advanced .
USA :
Cambridge University Press.
Gaya MLA
Sholikhah, Ika, Maratus. et al.
"Exploring Grammar In Context: Upper-intermediate And Advanced".
USA :
Cambridge University Press,
2000,2002.
Text.