Cita APA (7a ed.)

Gill, J. E. (1957). The Proterozoic in Canada. University of Toronto Press.

Cita Chicago Style (17a ed.)

Gill, J. E. The Proterozoic in Canada. [Toronto, Ontario]: University of Toronto Press, 1957.

Cita MLA (8a ed.)

Gill, J. E. The Proterozoic in Canada. University of Toronto Press, 1957.