APA استشهاد

Toulmin, S. (1953). Philosophy of science: An introduction. Hutchnson.

استشهاد بنمط شيكاغو

Toulmin, Stephen. Philosophy of Science: An Introduction. London: Hutchnson, 1953.

MLA استشهاد

Toulmin, Stephen. Philosophy of Science: An Introduction. Hutchnson, 1953.