Kent, D. L. (1990). GUMTREE: General utilisation model of timber resources - economic evaluation. Wood Utilisation Research Centre, Dept. of Conservation and Land Management.
芝加哥风格引文Kent, D. L. GUMTREE: General Utilisation Model of Timber Resources - Economic Evaluation. Harvey, W.A.: Wood Utilisation Research Centre, Dept. of Conservation and Land Management, 1990.
MLA引文Kent, D. L. GUMTREE: General Utilisation Model of Timber Resources - Economic Evaluation. Wood Utilisation Research Centre, Dept. of Conservation and Land Management, 1990.
警告：这些引文格式不一定是100％准确.