APA Style
Standard industrial classification manual 1972. (1972).
:
Washington, DC : US Government Printing Office.
Chicago Style
Standard industrial classification manual 1972.
.
:
Washington, DC : US Government Printing Office,
1972.
.
MLA Style
Standard industrial classification manual 1972.
.
:
Washington, DC : US Government Printing Office,
1972.
.
Turabian Style
Standard industrial classification manual 1972.
:
Washington, DC : US Government Printing Office,
1972.
.