Gaya APA
Ballin, W.H. (1990).
Perfect Your English : The Easy Way .
England:
Prentice-Hall.
Gaya Chicago
Ballin, W.H.
Perfect Your English : The Easy Way.
England:
Prentice-Hall,
1990.
Buku Teks.
Gaya MLA
Ballin, W.H.
Perfect Your English : The Easy Way.
England:
Prentice-Hall,
1990.
Buku Teks.
Gaya Turabian
Ballin, W.H.
Perfect Your English : The Easy Way.
England:
Prentice-Hall,
1990.
Buku Teks.