Παραπομπή APA

Toulmin, S., & Goodfield, J. (1965). Discovery of time.

Παραπομπή Chicago Style

Toulmin, Stephenand, και June Goodfield. Discovery of Time. 1965.

Παραπομπή MLA

Toulmin, Stephenand, και June Goodfield. Discovery of Time. 1965.