Owen, Julian, author
[RIBA , ], 2004
eBooks
Elliot, Rose, author
Chapmans Publisher Ltd., 1994
Buku Referensi
Rickertsen, Rick, author
[American Management Association, ], 2001
eBooks
Minrath, William R., author
D. Van Nostrand, 1956
Buku Teks
Greene, Gardiner G., author
McGraw-Hill, 1975
Buku Teks