Knecht, Thorpe, Trigger et Robertson, « Obituary notices: James Robert Appleyard, 1870–1921; Adrian Brown, 1852–1919; William Gowland, 1842–1922; Prof. Philippe A. Guye, 1862–1922; William Kellner, 1839–1922; George William Mac Donald; Lionel William Stansell, 1861–1922 », J. Chem. Soc. Trans., vol. 121, , p. 2898–2916 (DOI10.1039/CT9222102898, lire en ligne)
Knecht, Thorpe, Trigger et Robertson, « Obituary notices: James Robert Appleyard, 1870–1921; Adrian Brown, 1852–1919; William Gowland, 1842–1922; Prof. Philippe A. Guye, 1862–1922; William Kellner, 1839–1922; George William Mac Donald; Lionel William Stansell, 1861–1922 », J. Chem. Soc. Trans., vol. 121, , p. 2898–2916 (DOI10.1039/CT9222102898, lire en ligne)