Stebbing, E. P. (1940). “Robert Scott Troup, 1874 - 1939”. Obituary Notices of Fellows of the Royal Society3 (8): 217–219. doi:10.1098/rsbm.1940.0018. ISSN1479-571X.
Stebbing, E. P. (1940). “Robert Scott Troup, 1874 - 1939”. Obituary Notices of Fellows of the Royal Society3 (8): 217–219. doi:10.1098/rsbm.1940.0018. ISSN1479-571X.