TY  - BOOK
AU  - Leedy, Paul D.
AU  - Ormrod, Jeanne Ellis
TI  - Practical research: planning and design 
SN  - 0139603603
AV  - Q 180 L484p 2001 
PY  - 1985///
CY  - New Jersey
PB  - Merrill Prentice Hall
ER  -