Batley, Sue
Classification in theory and practice
Chandos, 2005
 Buku Teks
Satija, Mohinder Partap, 1949-
The theory and practice of the dewey decimal classification system
Chandos , 2013
 eBooks
Satija, Mohinder Partap, 1949-
Introduction to the practice of Dewey Decimal Classification
Oriental University Press , 1987
 Buku Teks
Wiley, E.O.
Phylogenetics : the theory and practice of phylogenetic systematics
John Wiley & Sons, 1981
 Buku Teks
Thompson, Arthur A., 1940-
Economics of the firm : theory and practice
Prentice-Hall, 1989
 Buku Teks