19: Experimenter Sampling
edited by Ralph L. Rosnow and Robert Rosenthal, 1933-; in Artifacts in Behavioral Research: Robert Rosenthal and Ralph L. Rosnow's Classic Books, A Re-issue of Artifact in Behavioral Research, Experimenter Effects in Behavioral Research and the Volunteer Subject (New York, NY: Oxford University Press, 2009, originally published 2009), 561-571