Steele, James, author
Academy Editions, 1996
Buku Teks
Jones, Margo, author
McGraw-Hill, 1965
Buku Teks
Chandrika Putri Larasati, author
2019
UI - Tugas Akhir
Dening, Greg
Cambridge University Press , 1992
Buku Teks
Howarth, David, author
McGraw-Hill, 1966
Buku Teks