APA-referens (7:e uppl.)

Lewis, P. M. b., & Kells, H. R. (1999). Foot soldier in an occupation force: The letters of Peter Lewis, 1898-1902. Linguistics Office,De La Salle University.

Chicago-referens (17:e uppl.)

Lewis, Peter McCabe b.1880n-1918, och Herbert R. Kells. Foot Soldier in an Occupation Force: The Letters of Peter Lewis, 1898-1902. Manila: Linguistics Office,De La Salle University, 1999.

MLA-referens (9:e uppl.)

Lewis, Peter McCabe b.1880n-1918, och Herbert R. Kells. Foot Soldier in an Occupation Force: The Letters of Peter Lewis, 1898-1902. Linguistics Office,De La Salle University, 1999.