TY  - BOOK
AU  - Shaughnessy,John J.
AU  - Zechmeister,Eugene B.
TI  - Research methods in psychology
SN  - 0070728593
U1  - 150.724 S5334r 1990 
PY  - 1990///
CY  - New York
PB  - McGraw-Hill
KW  - Psicología
KW  - Investigación
KW  - Metodología
KW  - Psicología experimental
N1  - Includes bibliographical references (p. 497-510)
ER  -