Sharma, Robin
The secret letters of the Monk who sold his ferrari: surat rahasia sang biksu
Menuju Insan Cemerlang, 2013
 Buku Teks
Sharma, Robin
The monk who sold his ferrari: kisah spiritual tentang usaha menggapai impian dan takdir = The monk who sold his Ferrari: a fable about fulfilling your dreams and reaching your destiny
Gramedia Pustaka Utama, 2005
 Buku Teks
Letters from a Secret Service agent: F.L. McDougall to S.M. Bruce, 1924-1929
edited by W.J. Hudson and Wendy Way
Australian Government Publishing Service, 1986
 Buku Referensi
Montagu, Mary Wortley
Letters
Knopf, 1992
 Buku Teks
The Harvard classics : volume 9, letters of Marcus Tullius Cicero with his treatises on friendship and old age; letters of Gaius Plinius Caecilius Secundus
Charles W. Eliot, edited
P. F. Collier & Son Corporation, 1959
 Buku Referensi