Cita APA (7a ed.)
Taylor, G., Harker, J., & Church, C. J. First Key Words. Ladybird Books.
Cita estilo Chicago (17a ed.)
Taylor, Geraldine, Jillian Harker, y Caroline Jayne Church. First Key Words. Leicestershire, Inglaterra: Ladybird Books.
Cita MLA (9a ed.)
Taylor, Geraldine, et al. First Key Words. Ladybird Books.
Precaución: Estas citas no son 100% exactas.