APA استشهاد

Preston Samuel H. (1972). Causes Of Death Life Tables For National Populations. Seminar.

استشهاد بنمط شيكاغو

Preston Samuel H. Causes Of Death Life Tables For National Populations. Newyork: Seminar, 1972.

MLA استشهاد

Preston Samuel H. Causes Of Death Life Tables For National Populations. Seminar, 1972.