Freifelder, D., Folkmanis, A., & Kirschner, I. (1971). Studies on Escherichia coli Sex Factors: Evidence That Covalent Circles Exist Within Cells and the General Problem of Isolation of Covalent Circles.
استشهاد بنمط شيكاغوFreifelder, David, Atis Folkmanis, و Ilana Kirschner. Studies On Escherichia Coli Sex Factors: Evidence That Covalent Circles Exist Within Cells and the General Problem of Isolation of Covalent Circles. 1971.
MLA استشهادFreifelder, David, Atis Folkmanis, و Ilana Kirschner. Studies On Escherichia Coli Sex Factors: Evidence That Covalent Circles Exist Within Cells and the General Problem of Isolation of Covalent Circles. 1971.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.