Christie, Agatha, 1890-1976, author
Gramedia Pustaka Utama, 2018
Buku Teks
Won-seop, KIM, author
Alex Media Komputindo, 2012
Buku Teks
Sinaga, Agnes Gautama, author
Fakultas Psikologi Universitas Indonesia, 2013
UI - Skripsi (Membership)
Ayu Prilia Puspitasari, author
2017
UI - Skripsi (Membership)
Apsanti Djokosuyatno, author
Universitas Indonesia, 1997
UI - Laporan Penelitian