Gaya APA
PL1 In Easy Stages A Programmed Learning Textbook. (1975).
:
.
Gaya Chicago
PL1 In Easy Stages A Programmed Learning Textbook.
.
:
,
1975.
Text Book Sistem Informasi.
Gaya MLA
PL1 In Easy Stages A Programmed Learning Textbook.
.
:
,
1975.
Text Book Sistem Informasi.
Gaya Turabian
PL1 In Easy Stages A Programmed Learning Textbook.
:
,
1975.
Text Book Sistem Informasi.