APA-viite (7. p.)

Letchford, S. (1977). Business mathematics and statistics (2nd.ed.). Donnington.

Chicago-viite (17. p.)

Letchford, S. Business Mathematics and Statistics. 2nd.ed. London: Donnington, 1977.

MLA-viite (9. p.)

Letchford, S. Business Mathematics and Statistics. 2nd.ed. Donnington, 1977.