APA (7e ed.) Bronvermelding

Heller, R. (2008). Achieving excellence; Influencing people; Balancing work and life. Dorling Kindersley.

Chicago (17e ed.) Bronvermelding

Heller, Robert. Achieving Excellence; Influencing People; Balancing Work and Life. London: Dorling Kindersley, 2008.

MLA (9e ed.) Bronvermelding

Heller, Robert. Achieving Excellence; Influencing People; Balancing Work and Life. Dorling Kindersley, 2008.