APA Style
Leffler, Jonathan. (1991).
Using INFORMIX-SQL, Second Edition (2nd).
New York:
Addison-Wesley Publishing Company, Inc..
Chicago Style
Leffler, Jonathan.
Using INFORMIX-SQL, Second Edition.
2nd
New York:
Addison-Wesley Publishing Company, Inc.,
1991.
Text.
MLA Style
Leffler, Jonathan.
Using INFORMIX-SQL, Second Edition.
2nd
New York:
Addison-Wesley Publishing Company, Inc.,
1991.
Text.
Turabian Style
Leffler, Jonathan.
Using INFORMIX-SQL, Second Edition.
2nd
New York:
Addison-Wesley Publishing Company, Inc.,
1991.
Print.