Sippl, Charles J.
Macmillan, 1985
Buku Referensi
Eigen, Lewis D.
Macmillan Publishing Company, 1993
Buku Referensi
editor, Laurence Urdang
Macmillan Reference Books, 1995
Buku Referensi
editor, Jean-Claude Corbeil
Macmillan Publishing Company, 1992
Buku Referensi
Allaby, Michael
Macmillan, 1991
Buku Referensi