Nasution, Andi Hakim, author
Gramedia, 1988
Buku Teks
Nasution, Andi Hakim, author
Gramedia, 1976
Buku Teks
Erickson, Bonnie H., author
LP3 ES, 1981
Buku Teks
Erickson, Bonnie H., author
LP3ES, 1977
Buku Teks
Nasution, Andi Hakim, author
[publisher not identified], 1985
Buku Teks