APA Style
Programmed English Course. (1983).
USA:
Grolier International, Inc..
Chicago Style
Programmed English Course.
.
USA:
Grolier International, Inc.,
1983.
Text.
MLA Style
Programmed English Course.
.
USA:
Grolier International, Inc.,
1983.
Text.
Turabian Style
Programmed English Course.
USA:
Grolier International, Inc.,
1983.
Print.