APA Format
Ettlin, Walter A. (1981).
Wordstar TM :made easy /Walter A. Ettlin
. : McGraw-Hill,.
MLA Format
Ettlin, Walter A.
Wordstar TM :made easy /Walter A. Ettlin
. : McGraw-Hill,, 1981
Chicago Format
Ettlin, Walter A. Wordstar TM :made easy /Walter A. Ettlin. : McGraw-Hill,, 1981.