Gaya APA
Schilderen. (1976).
London:
Macdonald Education Ltd.
Gaya Chicago
Schilderen.
.
London:
Macdonald Education Ltd,
1976.
Buku.
Gaya MLA
Schilderen.
.
London:
Macdonald Education Ltd,
1976.
Buku.
Gaya Turabian
Schilderen.
London:
Macdonald Education Ltd,
1976.
Buku.