Gaya APA
Harris, Michael, Mower, David, Sikorzynska, Anna. (2004).
Opportunities Upper Intermediate : Student's Book (Cet 1).
New York:
Pearson Longman.
Gaya Chicago
Harris, Michael, Mower, David, Sikorzynska, Anna.
Opportunities Upper Intermediate : Student's Book.
Cet 1
New York:
Pearson Longman,
2004.
Text.
Gaya MLA
Harris, Michael, Mower, David, Sikorzynska, Anna.
Opportunities Upper Intermediate : Student's Book.
Cet 1
New York:
Pearson Longman,
2004.
Text.
Gaya Turabian
Harris, Michael, Mower, David, Sikorzynska, Anna.
Opportunities Upper Intermediate : Student's Book.
Cet 1
New York:
Pearson Longman,
2004.
Print.