compiled and edited by Bruce Overton
Macmillan, 1938
Buku Referensi
general editor, David W. Pearce
Macmillan Reference Books, 1989
Buku Referensi
general editor, David W. Pearce
Macmillan Press, 1992
Buku Referensi
Allaby, Michael, author
Macmillan, 1985
Buku Referensi
Sippl, Charles J., author
Macmillan, 1985
Buku Referensi