Caenegem, R. C. van, author
North-Holland Publishing, 1978
Buku Teks
Hoffman, Ross J.S., author
Littlefield, Adams, 1958
Buku Teks
Cassara, Ernestt, author
Gale Research Coompany, 1977
Buku Teks
Jackson, William Thomas Hobdell
Collier, 1966
Buku Teks
Hollister, C. Warren, author
John Wiley & Sons, 1968
Buku Teks