Blishen, E., & Cook, C. (1979). Pears guide to today's world. Pelham Books.
Citación estilo ChicagoBlishen, Edward, and Chris Cook. Pears Guide to Today's World. London: Pelham Books, 1979.
Cita MLABlishen, Edward, and Chris Cook. Pears Guide to Today's World. Pelham Books, 1979.
Warning: These citations may not always be 100% accurate.