edited by Mihkel Koel
Taylor & Francis Group, 2009
Buku Teks SO
Christian, Gary D.
John Wiley & Sons, 1986
Buku Teks
Christian, Gary D.
John Wiley & Sons, 1977
Buku Teks
Wismer, Robert K.
Macmillan, 1991
Buku Teks
Skoog, Douglas A.
Saunders College Publishing, 1996
Buku Teks