Gaya APA

P.CLEMENTS, J., GIDO, J. (2009). EFFECTIVE PROJECT MANAGEMENT (4th ed). United Staes: SOUTH-WESTERN CENGAGE Learing.

Gaya MLA

P.CLEMENTS, JAMES., GIDO, JACK. "EFFECTIVE PROJECT MANAGEMENT". 4th ed United Staes: SOUTH-WESTERN CENGAGE Learing, 2009. Text.