Gaya APA

Gardner, G, S. (1996). 21st century manager : meeting the challenges and opportunities of the new corporate age . New Jersey: Petersons/Pacesseter Books.

Gaya MLA

Gardner, Gareth, S.. "21st century manager : meeting the challenges and opportunities of the new corporate age". New Jersey: Petersons/Pacesseter Books, 1996. Buku/Printed Material.