Cita APA (7th ed.)

Mackay, A. L., & Medawar, P. (1991). A Dictionary of scientific quotations (1a. ed.). Institute of physics.

Cita Chicago (17th ed.)

Mackay, Alan L., i Peter Medawar. A Dictionary of Scientific Quotations. 1a. ed. Bristol: Institute of physics, 1991.

Cita MLA (9th ed.)

Mackay, Alan L., i Peter Medawar. A Dictionary of Scientific Quotations. 1a. ed. Institute of physics, 1991.