| 1 |  | How to design and evaluate research in education / Jack R. Fraenkel, Norman E. Wallen, Helen H. Hyun . - 8th ed. - New York : McGraw-Hill, 2012. - 662 p. : illustrations ; 27 cm
Thông tin xếp giá: : L15QCA001261-L15QCA001262 |
| 2 | | How to design and evaluate research in education / Jack R. Fraenkel, Norman E. Wallen . - 5th ed. - New York : McGraw-Hill, 2003. - 623 p. : illustrations + CD - ROM ; 30 cm
Thông tin xếp giá: : L15QCA000413 |