Willis, R. J. B., Baildam, E., & Marshall, D. (2001). How to stay healthy. The Stanborough Press.
Cita Chicago Style (17a ed.)Willis, Richard J. B., Eileen Baildam, y David Marshall. How to Stay Healthy. Grantham: The Stanborough Press, 2001.
Cita MLA (9a ed.)Willis, Richard J. B., et al. How to Stay Healthy. The Stanborough Press, 2001.
Precaución: Estas citas no son 100% exactas.