edited by G. Elgie Christ
Frederick Warne and Co, 1960
Buku Referensi
editor, Laurence Urdang
Macmillan Reference Books, 1995
Buku Referensi
Crabb, George, author
Grosset & Dunlap, 1945
Buku Referensi
Geddes & Grosset, 2000
Buku Referensi
Kirkpatrick, Betty, author
Oxford University Press, 1994
Buku Referensi