21
Published [1981]

Report Number(s): APA 1398

Link to full text
22
Published [1982]

Report Number(s): APA 1399

Link to full text
23
Published 1982]

Report Number(s): APA 1400

Link to full text
24
Published [1980]

Report Number(s): APA 1397 SUS 338

Link to full text
25
Published 1980?]

Report Number(s): APA 392

Link to full text
27
28
29
30
Published [1980]

Report Number(s): APA 1366

Link to full text
31
32
33
Published [1984]

Report Number(s): APA 1190

Link to full text