Certo, s. T., & Certo, S. C. (2007). Modern Management 10e (10th.). Pentice Hall of India Pvt Ltd.
Dyfyniad Arddull ChicagoCerto, s. Trevis, and Samuel C. Certo. Modern Management 10e. 10th. New Delhi: Pentice Hall of India Pvt Ltd, 2007.
Dyfyniad MLACerto, s. Trevis, and Samuel C. Certo. Modern Management 10e. 10th. Pentice Hall of India Pvt Ltd, 2007.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.