Cita APA (7a ed.)
Donaldson, E., & Donaldson, G. The Book of Days. A and W Publishers.
Cita estilo Chicago (17a ed.)
Donaldson, Elizabeth, y Gerald Donaldson. The Book of Days. Nueva York, EUA: A and W Publishers.
Cita MLA (9a ed.)
Donaldson, Elizabeth, y Gerald Donaldson. The Book of Days. A and W Publishers.
Precaución: Estas citas no son 100% exactas.