Penggayaan APA
ULRICH'S International periodicals directory 1989-90 :. (1989).
New York:
RR Bowker.
Chicago Style
ULRICH'S International periodicals directory 1989-90 :.
28th. ed..
New York:
RR Bowker,
1989.
Buku.
MLA Style
ULRICH'S International periodicals directory 1989-90 :.
28th. ed..
New York:
RR Bowker,
1989.
Buku.
Turabian Style
ULRICH'S International periodicals directory 1989-90 :.
New York:
RR Bowker,
1989.
Buku.