Styl cytowania APA

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

Styl cytowania Chicago

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

Styl cytowania MLA

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