disusun oleh Sofia Rangkuti-Hasibuan ; editor, Nung Atasana
Gramedia Pustaka Utama, 1992
Buku Teks
Hanbury, Harold Grenville, author
Oxford University Press, 1960
Buku Teks
James, Philip S., author
Butterworth, 1959
Buku Teks
James, Philip S., author
Butterworths, 1959
Buku Teks
Keenan, Denis, author
Pitman, 1989
Buku Teks