Fransisca, author
Fakultas Psikologi Universitas Indonesia, 2016
UI - Tesis Membership
Wood, Nancy V., author
McGraw-Hill, 1991
Buku Teks
John Hartley [and others]
Rinehart and Winston, 1962
Buku Teks
Annisaa Paradisa, author
2018
UI - Tesis (Membership)
Smith, Brenda D., author
Longman, 2000
Buku Teks