Dyfyniad APA

Simpson, J. Y., Priestley, W. O., & Storer, H. R. (1855). The obstetric memoirs and contributions of James Y. Simpson. Lippincott.

Dyfyniad Arddull Chicago

Simpson, James Young, W. O. Priestley, and H. R. Storer. The Obstetric Memoirs and Contributions of James Y. Simpson. Philadelphia: Lippincott, 1855.

Dyfyniad MLA

Simpson, James Young, et al. The Obstetric Memoirs and Contributions of James Y. Simpson. Lippincott, 1855.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.