Gaya APA
JOHNSON, R, B., JOHNSON, S, R. (1975).
Toward individualized learning: .
Menlo Park, California:
Addison-Wesley Publishing Company.
Gaya MLA
JOHNSON, Rita, B.., JOHNSON, Struart, R..
"Toward individualized learning:".
Menlo Park, California:
Addison-Wesley Publishing Company,
1975.
Buku.