Artikel Jurnal
Ach Taufiqil Aziz ... [and others]; editors, Feby Indriani dan Irsyad Rafsadie
PUSAD Paramadina, 2018
Buku Teks
Hodgetts, Richard M., author
Saunders, 1977
Buku Teks
Benton, William, author
Associated College Press, 1958
Buku Teks
Frohman, Alan L., author
McGraw-Hill, 1992
Buku Teks