Cita APA (7a ed.)

Johnson, W., & Burke, A. (2003). Invoking Digital Reference: Creation and Implementation.

Cita Chicago Style (17a ed.)

Johnson, Wendell, y Adam Burke. Invoking Digital Reference: Creation and Implementation. 2003.

Cita MLA (9a ed.)

Johnson, Wendell, y Adam Burke. Invoking Digital Reference: Creation and Implementation. 2003.