Mentor book, 1956
Buku Referensi
Trilling, Lionel, author
Holt, Rinehart and Winston, 1967
Buku Teks
program consultants, Beverly Ann Chin ... [et al.]
Glencoe McGraw-Hill, 2000
Buku Teks
Fakultas Ilmu Budaya Universitas Mulawarman, 2017
Majalah, Jurnal, Buletin
Manila : Bureau of National and Foreign Infermation
Majalah, Jurnal, Buletin