Gaya APA
Principles and practice in second language acquisition. (1983).
Oxford:
Pergamon Press.
Gaya Chicago
Principles and practice in second language acquisition.
.
Oxford:
Pergamon Press,
1983.
Buku.
Gaya MLA
Principles and practice in second language acquisition.
.
Oxford:
Pergamon Press,
1983.
Buku.
Gaya Turabian
Principles and practice in second language acquisition.
Oxford:
Pergamon Press,
1983.
Buku.