APA引文

Welch, R. A., & Macrina, F. L. (1981). Physical characterization of Bacteroides fragilis R plasmid pBF4.

Citação norma Chicago

Welch, R A., and F L. Macrina. Physical Characterization of Bacteroides Fragilis R Plasmid PBF4. 1981.

MLA引文

Welch, R A., and F L. Macrina. Physical Characterization of Bacteroides Fragilis R Plasmid PBF4. 1981.

警告：這些引文格式不一定是100％准確.