Fraenkel, J. R., & Wallen, N. E. (2019). How to design and evaluate research in education. McGraw-Hill.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)Fraenkel, Jack R., ба Norman E. Wallen. How to Design and Evaluate Research in Education. Boston: McGraw-Hill, 2019.
MLA -ийн эшлэл (9 дэх хэвлэлт)Fraenkel, Jack R., ба Norman E. Wallen. How to Design and Evaluate Research in Education. McGraw-Hill, 2019.