21
22
24
26
30
31
32
33
Published [1985]

Report Number(s): APA 1697

Link to full text
34
by Gipson, Philip S.
Published [1982]

Report Number(s): APA 395 APA 1319 SUS 52

Link to full text
36
39
40
Published [1981]

Report Number(s): APA 1326 SUS 56

Link to full text