Woodget, B. W., & Cooper, D. (1991). Samples and standards: :analytical chemistry by open learning. John Wiley.
استشهاد بنمط شيكاغوWoodget, Brian W., و Derek Cooper. Samples and Standards: :analytical Chemistry by Open Learning. Singapore: John Wiley, 1991.
MLA استشهادWoodget, Brian W., و Derek Cooper. Samples and Standards: :analytical Chemistry by Open Learning. John Wiley, 1991.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.