Serven, L. B. M. (1998). Value planningthe new approach to building value every dayLawrence B. MacGregor Serven. John Wiley & Sons.
Dyfyniad Arddull ChicagoServen, Lawrence B. MacGregor. Value Planningthe New Approach to Building Value Every DayLawrence B. MacGregor Serven. John Wiley & Sons, 1998.
Dyfyniad MLAServen, Lawrence B. MacGregor. Value Planningthe New Approach to Building Value Every DayLawrence B. MacGregor Serven. John Wiley & Sons, 1998.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.