Cita APA (7a ed.)

Thomson, J. A. (1920). The System of animate nature: The gifford lectures delivered in the university of St. Andrews in the years 1915 and 1916. Williams & Norgate.

Cita Chicago Style (17a ed.)

Thomson, J. Arthur. The System of Animate Nature: The Gifford Lectures Delivered in the University of St. Andrews in the Years 1915 and 1916. London: Williams & Norgate, 1920.

Cita MLA (9a ed.)

Thomson, J. Arthur. The System of Animate Nature: The Gifford Lectures Delivered in the University of St. Andrews in the Years 1915 and 1916. Williams & Norgate, 1920.