APA Style
Patrick, Donald L.. ().
Ulrich's international periodicals directory 1990-91 now including irregular serials and annuals .
:
.
Chicago Style
Patrick, Donald L..
Ulrich's international periodicals directory 1990-91 now including irregular serials and annuals.
:
,
.
.
MLA Style
Patrick, Donald L..
Ulrich's international periodicals directory 1990-91 now including irregular serials and annuals.
:
,
.
.
Turabian Style
Patrick, Donald L..
Ulrich's international periodicals directory 1990-91 now including irregular serials and annuals.
:
,
.
.