Koffka, Köhler, and the "crisis" in psychology.
Stud Hist Philos Biol Biomed Sci. 2012 Jun;43(2):483-92. doi: 10.1016/j.shpsc.2011.11.005. Epub 2011 Nov 25.
Stud Hist Philos Biol Biomed Sci. 2012.
PMID: 22520197