APA-referens (7:e uppl.)

Lewis, R. S. (1964). Elements of mining (3d ed. rev. by George B. Clark.). John Wiley.

Chicago-referens (17:e uppl.)

Lewis, Robert Strong. Elements of Mining. 3d ed. rev. by George B. Clark. New York: John Wiley, 1964.

MLA-referens (9:e uppl.)

Lewis, Robert Strong. Elements of Mining. 3d ed. rev. by George B. Clark. John Wiley, 1964.