Nasution, Andi Hakim
Gramedia, 1976
Buku Teks SO
Erickson, Bonnie H.
LP3 ES, 1981
Buku Teks SO
Erickson, Bonnie H.
LP3ES, 1977
Buku Teks SO
Nasution, Andi Hakim
[publisher not identified], 1985
Buku Teks SO
Nasution, Andi Hakim
Gramedia, 1986
Buku Teks SO