APA Style
Equation Editor User Guide. (1991).
America:
Microsoft Corporation.
Chicago Style
Equation Editor User Guide.
.
America:
Microsoft Corporation,
1991.
Text.
MLA Style
Equation Editor User Guide.
.
America:
Microsoft Corporation,
1991.
Text.
Turabian Style
Equation Editor User Guide.
America:
Microsoft Corporation,
1991.
Print.