Cita APA (7a ed.)
Harrison, D., & Henderson, M. (1991). Hope for the world. Inter-Varsity.
Cita Chicago Style (17a ed.)
Harrison, Dan, y Maria Henderson. Hope for the World. Illinois: Inter-Varsity, 1991.
Cita MLA (9a ed.)
Harrison, Dan, y Maria Henderson. Hope for the World. Inter-Varsity, 1991.
Precaución: Estas citas no son 100% exactas.