Cowen, Richard
History of life/Richard Cowen
McGraw-Hill, 1976
 Buku Teks
Westfall, Richard S.
The life of Isaac Newton / Richard S. Westfall
Cambridge University Press , 1993
 Buku Teks SO
Aldington, Richard
Life for life's sake : a book of reminiscences / Richard Aldington
The Viking Press, 1941
 Buku Teks SO
LIfe: the science of biology
by William K. Purves ... [et al.]
Salt lake City Sinauer Associates , 1998
 Buku Teks
Purves, William K.
Life : the science of biology
The Mona GrOup LLC, 1998
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