Cita APA (7a ed.)

Humphry, J. A., & Ferguson, E. A. (1970). The State Library: Institution in Transition.

Cita Chicago Style (17a ed.)

Humphry, John A., y Eleanor A. Ferguson. The State Library: Institution in Transition. 1970.

Cita MLA (9a ed.)

Humphry, John A., y Eleanor A. Ferguson. The State Library: Institution in Transition. 1970.