Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.