Steel, Robert George Douglas, 1917-
Principles and procedures of statistics: a biometrical approach
McGraw-Hill, 1980
 Buku Teks
Riggs, Douglas Shepard
The mathematical approach to physiological problems : a critical primer / Douglas Shepard Riggs
The Williams&Wilkins , 1963
 Buku Teks
Steel, Robert George Douglas, 1917-
Principles and procedures of statistics : with special reference to the biological sciences
McGraw-Hill, 1960
 Buku Teks
Pagano, Marcello
Principles of biostatistics / Marcello Pagano, Kimberlee Gauvreau.
Duxbury Press, 1993
 Buku Teks
Steel, Robert George Douglas, 1917-
Principles and procedures of statistics : a biometric approach
McGraw-Hill, 1980
 Buku Teks