Dixson, Robert J., author
Regents Oublishing, 1953
Buku Teks
Parkinson, Joy, author
Churchill Livingstone, 2004
Buku Teks
Rayner Hardjono, author
Gramedia Pustaka Utama, 2000
Buku Teks
Erika Cudworth, Stephen Hobden and Emilian Kavalski, editors
Routledge, Taylor & Francis Group, 2018
Buku Teks
Smarandache, Florentin, author
Xiquan, 2004
Buku Teks