Cita APA (7a ed.)

Lewis, S. (1988). The United States: Its past, purpose, and promise (Teacher's guide & resource.). Janus Books.

Cita Chicago Style (17a ed.)

Lewis, Sherman. The United States: Its Past, Purpose, and Promise. Teacher's guide & resource. Hayward, CA: Janus Books, 1988.

Cita MLA (9a ed.)

Lewis, Sherman. The United States: Its Past, Purpose, and Promise. Teacher's guide & resource. Janus Books, 1988.