Cohen,, Louis,, 1928-
Research methods in education / Louis Cohen, Lawrence Manion, Keith Morrison
Research methods in education / Louis Cohen, Lawrence Manion, Keith Morrison
. - 5th ed
. - London : RoutledgeFalmer, imp. 2001
. - XVI, 446 p. 25 cm
0-415-19541-1 Brochado
37.012