T C Sheng. (1990). FAO conservation guide N.13.6: Watershed management field manual: watershed survey and planning. Rome: FAO.
استشهاد بنمط شيكاغوT C Sheng. FAO Conservation Guide N.13.6: Watershed Management Field Manual: Watershed Survey and Planning. Rome: FAO, 1990.
MLA استشهادT C Sheng. FAO Conservation Guide N.13.6: Watershed Management Field Manual: Watershed Survey and Planning. Rome: FAO, 1990.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.