Nunnally, Jum C., author
McGraw-Hill, 1994
Buku Teks
Sherine Kamila Hassan, author
2018
UI - Makalah dan Kertas Kerja
Crocker, Linda M., author
Holt, Rinehart, and Winston, 1986
Buku Teks
Nabilah Budhi Harto, author
Fakultas Psikologi Universitas Indonesia, 2019
UI - Makalah dan Kertas Kerja
Jaccard, James, author
Wadsworth, 1983
Buku Teks