Gaya APA
Kosta, J., Williams, M. (2015).
Cambridgen English: Prepare ! Student's Book Level 3 .
s.l:
Cambridge University Press.
Gaya MLA
Kosta, Joanna., Williams, Melanie.
"Cambridgen English: Prepare ! Student's Book Level 3".
s.l:
Cambridge University Press,
2015.
Text.