Heathcote, Edwin, author
Academy Editions, 1997
Buku Teks
Turner, Dick
Hancock House, 1976
Buku Teks
edited by L. Pamela Cook
Society for Industrial and Applied Mathematics, 1993
eBooks
Thambirajah, Radha, author
Churchill Livingstone Elsevier, 2010
Buku Teks
Gibran, Kahlil, 1883-1931, author
Bentang , 2017
Buku Teks