Giles, Ranald V., author
McGraw-Hill, 1962
Buku Teks
Martin, E. A. (Elizabeth A.)
MacMillan Press, 1985
Buku Referensi
Hopp, Wallace J., author
McGraw-Hill, 2000
Buku Teks
edited by Anthony Chalcraft [and others]
Library Association, 1992
Buku Referensi
Douglas Greenwald, editor in chief
McGraw-Hill, 1994
Buku Referensi