APA Style
WALDEN. (1992).
London:
A MILLENNIUM PROJECT.
Chicago Style
WALDEN.
.
London:
A MILLENNIUM PROJECT,
1992.
Buku Teks.
MLA Style
WALDEN.
.
London:
A MILLENNIUM PROJECT,
1992.
Buku Teks.
Turabian Style
WALDEN.
London:
A MILLENNIUM PROJECT,
1992.
Buku Teks.