Darwin, Francis, 1887, The life and letters of Charles Darwinp. 95
Darwin, Francis, 1887, The life and letters of Charles Darwinp. 108
Slotten pp. 153–54 Darwin, Francis, 1887, The life and letters of Charles Darwinp. 116
doi.org
dx.doi.org
KUTSCHERA, U. A comparative analysis of the Darwin–Wallace papers and the development of the concept of natural selection. Theory in Biosciences. 2003-12-19, s. 343–359. DOI10.1007/s12064-003-0063-6.Je zde použita šablona {{Cite journal}} označená jako k „pouze dočasnému použití“.
ROSEN, Jonathan. Missing Link: Alfred Russel Wallace, Charles Darwin’s neglected double [online]. The New Yorker Feb 2007 [cit. 2007-04-25]. Dostupné online.
BRAND, Stewart. For God’s Sake, Margaret [online]. CoEvolutionary Quarterly, June 1976 [cit. 2007-04-04]. Dostupné v archivu pořízeném dne 2007-04-15.
OLLERTON, J. Flowering time and the Wallace Effect [PDF]. Heredity, August 2005 [cit. 2007-05-22]. Dostupné v archivu pořízeném dne 2007-06-05.
wku.edu
wku.edu
SMITH, Charles H. Alfred Russel Wallace: Evolution of an Evolutionist Introduction [online]. Western Kentucky University [cit. 2011-12-24]. Dostupné online.
SMITH, Charles H. Alfred Russel Wallace: A Capsule Biography [online]. The Alfred Russel Wallace Page [cit. 2007-04-27]. Dostupné online.
WALLACE, Alfred. Paper Money as a Standard of Value (S557: 1898) [online]. The Alfred Russel Wallace Page [cit. 2007-05-06]. Dostupné online.
WALLACE, Alfred. The Revolt of Democracy (S734: 1913) [online]. The Alfred Russel Wallace Page [cit. 2007-05-06]. Dostupné online.
WALLACE, Alfred Russel. On the Law Which has Regulated the Introduction of Species [online]. The Alfred Russel Wallace Page [cit. 2007-05-08]. Dostupné online.
WALLACE, Alfred. On the Tendency of Varieties to Depart Indefinitely From the Original Type [online]. The Alfred Russel Wallace Page [cit. 2007-04-22]. Dostupné online.
SMITH, Charles. Responses to Questions Frequently Asked About Wallace: Did Darwin really steal material from Wallace to complete his theory of natural selection? [online]. The Alfred Russel Wallace Page [cit. 2008-04-29]. Dostupné online.
SMITH, Charles H. Wallace's Unfinished Business [online]. Complexity (publisher Wiley Periodicals, Inc.) Volume 10, No 2, 2004 [cit. 2007-05-11]. Dostupné online.
SMITH, Charles H. Alfred Russel Wallace: Evolution of an Evolutionist Chapter Six. A Change of Mind? [online]. The Alfred Russel Wallace Page [cit. 2007-04-29]. Dostupné online.
WALLACE, Alfred. 1861 Letter from Wallace to Thomas Sims [online]. The Alfred Russel Wallace Page [cit. 2007-04-04]. Dostupné online.
SMITH, Charles H. Alfred Russel Wallace: Evolution of an Evolutionist Chapter One. Belief and Spiritualism [online]. The Alfred Russel Wallace Page [cit. 2007-04-20]. Dostupné online.
WALLACE, Alfred. Notes on the Growth of Opinion as to Obscure Psychical Phenomena During the Last Fifty Years [online]. The Alfred Russel Wallace Page [cit. 2007-04-20]. Dostupné online.
WALLACE, Alfred. Is Mars Habitable? (S730: 1907) [online]. The Alfred Russel Wallace Page [cit. 2012-02-15]. Dostupné online. (anglicky)
The Alfred Russel Wallace Page [online]. [cit. 2007-05-13]. Dostupné online.
people.wku.edu
WALLACE, Alfred. Bibliography of the Writings of Alfred Russel Wallace [online]. The Alfred Russel Wallace Page [cit. 2007-05-06]. Dostupné online.
WALLACE, Alfred Russel. World of Life [online]. The Alfred Russel Wallace Page [cit. 2011-03-23]. Dostupné online.