Corbett, Edward P.J., author
Scott, Foresman and Company, 1983
Koleksi Publik
Penfield, Elizabeth, author
Scott, Foresman and Company, 1985
Koleksi Publik
James D. Williams, editor
Wiley-Blackwell, 2009
Buku Teks
Luxemburg, Jan van, author
Peter lang, [date of publication not identified]
Buku Teks
Levin, Gerald, author
Harcourt, Brace & World, 1966
Buku Teks