¹⁴ W. W. Burke (1965), Chemers (1969), Fiedler (1967a, 1971b, 1971c, 1971d, 1972a), W. K. Graham (1970/1973), Green and Nebeker (1974), Nealy and Blood (1968), Rice and Chemers (1975), Shiflett and Nealy (1972), Shima (1968), and Yukl (1970).