Gaya APA
Hornby, A, S. (1987).
Oxford Advanced Learner`s of Current English: Revised and updated (Ed.Revisi).
Oxford:
Oxford University Press.
Gaya MLA
Hornby, A, S.
"Oxford Advanced Learner`s of Current English: Revised and updated".
Ed.Revisi
Oxford:
Oxford University Press,
1987.
Text.