Cita APA (7a ed.)

Wahl, E., Jacob, G., & Jakoi, J. (1968). This land ; A geography of Canada (3. Impr.).

Cita Chicago Style (17a ed.)

Wahl, Edward, Georg Jacob, y John Jakoi. This Land ; A Geography of Canada. 3. Impr. Toronto: Oxford Univ. Pr, 1968.

Cita MLA (9a ed.)

Wahl, Edward, et al. This Land ; A Geography of Canada. 3. Impr. 1968.