Chinchilla, M., Alvarado, A., & Mata, R. (2010). Soil-forming factors and soils distribution of the middle-upper Pirrís River watershed, Talamanca, Costa Rica.
استشهاد بنمط شيكاغوChinchilla, Miguel, Alfredo Alvarado, و Rafael Mata. Soil-forming Factors and Soils Distribution of the Middle-upper Pirrís River Watershed, Talamanca, Costa Rica. 2010.
MLA استشهادChinchilla, Miguel, Alfredo Alvarado, و Rafael Mata. Soil-forming Factors and Soils Distribution of the Middle-upper Pirrís River Watershed, Talamanca, Costa Rica. 2010.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.