Bolles, R. N. (1978). The tree boxes of life: And how to get out of them : An introduction to life/work planning. Berkeley, CA: Ten Speed Press.
استشهاد بنمط شيكاغوBolles, Richard Nelson. The Tree Boxes of Life: And How to Get Out of Them : An Introduction to Life/work Planning. Berkeley, CA: Ten Speed Press, 1978.
MLA استشهادBolles, Richard Nelson. The Tree Boxes of Life: And How to Get Out of Them : An Introduction to Life/work Planning. Berkeley, CA: Ten Speed Press, 1978.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.