Erickson, Bonnie H.
LP3ES, 1977
Buku Teks SO
Duncan, Otis Dudley
The Free Press of Glencoe, 1961
Buku Teks SO
Bouveyron, Charles
Cambridge University Press, 2019
eBooks
Erickson, Bonnie H.
LP3 ES, 1981
Buku Teks SO
Edy Supriyadi
In Media, 2014
Buku Teks SO