Cita APA (7th ed.)

Mortimer, P. (1986). Queen Elizabeth: A Portrait of the Queen Mother. St. Martin's Press.

Cita Chicago (17th ed.)

Mortimer, Penelope. Queen Elizabeth: A Portrait of the Queen Mother. New York, USA: St. Martin's Press, 1986.

Cita MLA (9th ed.)

Mortimer, Penelope. Queen Elizabeth: A Portrait of the Queen Mother. St. Martin's Press, 1986.