64
66
by Ballard, Warren B.,
Published 1978.

Report Number(s): APA 917

Link to full text
68
69
Published [1985]

Report Number(s): APA 2828 (draft) SUS 508

Link to full text
71
72
73
77
78
Published [1983]

Report Number(s): APA 862 SUS 254

Link to full text
79