Gaya APA
Study Skills In English. (2005).
Harlow:
Pearson Education Longman.
Gaya Chicago
Study Skills In English.
Cet. 9.
Harlow:
Pearson Education Longman,
2005.
.
Gaya MLA
Study Skills In English.
Cet. 9.
Harlow:
Pearson Education Longman,
2005.
.
Gaya Turabian
Study Skills In English.
Harlow:
Pearson Education Longman,
2005.
.