Cooper , D., & Doran , C. (1991). Classical methods: Analytical ahemistry by open learning. John wiley & sons.
استشهاد بنمط شيكاغوCooper , Derek, و Chris Doran. Classical Methods: Analytical Ahemistry by Open Learning. London: John wiley & sons, 1991.
MLA استشهادCooper , Derek, و Chris Doran. Classical Methods: Analytical Ahemistry by Open Learning. John wiley & sons, 1991.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.