L. Shaffer

发表

L. Shaffer, 1947, Journal of consulting psychology.

W. Furman, L. Shaffer, Wyndol Furman, 2003 .

L. Shaffer, 2011, The American psychologist.

L. Shaffer, R. H. Gault, 1936 .

E. Shoben, L. Shaffer, 1956 .

L. Shaffer, 1947, Journal of consulting psychology.

G. L. Freeman, H. B. English, J. Guilford, 1939 .