ARMSTRONG, M. Armstrong's handbook of human resource management practice. 14th edition. New York: Kogan Page Limited, 2017. ISBN 9780749474119 0749474114
ARMSTRONG, M. and T. STEPHENS. A handbook of management and leadership: A guide to managing for results. London: Kogan Page, 2005. ISBN 0-7494-4344-8 .
DRUCKER, P. F. Managing for the future. Abington: Routledge, 2011. ISBN 978-0-75060-909-8 .