Cita APA (7th ed.)

Kockelmans, J. J. (1969). The world in science and philosophy. Bruce Pub. Co.

Cita Chicago (17th ed.)

Kockelmans, Joseph J. The World in Science and Philosophy. Milwaukee: Bruce Pub. Co, 1969.

Cita MLA (9th ed.)

Kockelmans, Joseph J. The World in Science and Philosophy. Bruce Pub. Co, 1969.