Gaya APA
Cities : Scientific American. (1969).
New York:
Alfrea,A.knopf.
Gaya Chicago
Cities : Scientific American.
.
New York:
Alfrea,A.knopf,
1969.
Teks.
Gaya MLA
Cities : Scientific American.
.
New York:
Alfrea,A.knopf,
1969.
Teks.
Gaya Turabian
Cities : Scientific American.
New York:
Alfrea,A.knopf,
1969.
Teks.