Timothy J. O`Leary, David Levinson editors
G.K. Hall & Company, 1994
Buku Referensi
edited by C.A. Jacobson and Clifford A. Hampel
Van Nostrand Reinhold, 1959
Buku Referensi
edited by David A. Leeming, Kathryn Madden, Stanton Marlan
Springer, 2009
Buku Referensi
edited by David A. Leeming, Kathryn Madden, Stanton Marlan
Springer, 2009
Buku Referensi
Pandey, A.K., author
Anmol Publications, 1992
Buku Referensi