Cohen, Louis,, 1928-
Morrison, Keith
Manion, Lawrence
Research methods in education / Louis Cohen, Lawrence Manion and Keith Morrison . - 5th ed . - London : RoutledgeFalmer, 2003 repr . - XVI, 446 p.


ISBN 0-415-19541-1.

Investigação educativa
Educação--Metodologia da investigação

CDU 371.3