Retrieved 2009-10-01. ↑ "Art Chickering". www.goddard.edu. Retrieved 2016-08-04. Cite web URL http://www.goddard.edu/people/art-chickering Title Art Chickering Website www.goddard.edu URL access date 2016-08-04 ↑ Evans, Nancy J; Forney, Deanna S; Guido-DiBrito, Florence (1998).