Smith, J.H.
Newnes-Butterworths, 1971
Buku Teks
Lazinger, Susan S (Susan Smernoff)
Englewood, Colorado Libraries Unlimited A Division of Greenwood 2001
Buku Teks
Lazinger, Susan S (Susan Smernoff)
Libraries Unlimited, 2001
Buku Teks
edited by Ann Peterson Bishop, Nancy A. Van House and Barbara Pfeil Buttenfield
MIT Press, 2003
Buku Teks
Gothmann, William H.
Prentice-Hall, 1982
Buku Teks