Dyfyniad APA

Johnson, A. G., & Triger, D. R. (1987). Liver disease and Gallstones: The facts.

Dyfyniad Arddull Chicago

Johnson, Alan G., and David R. Triger. Liver Disease and Gallstones: The Facts. Oxford, OUP, 1987.

Dyfyniad MLA

Johnson, Alan G., and David R. Triger. Liver Disease and Gallstones: The Facts. 1987.

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