Cita APA (7th ed.)

Roberts, M. (1927). On the trail: Through British Columbia after forty years (1a. ed.). Eveleigh Nash & Grayson, Ltd.

Cita Chicago (17th ed.)

Roberts, Morley. On the Trail: Through British Columbia After Forty Years. 1a. ed. Londres: Eveleigh Nash & Grayson, Ltd, 1927.

Cita MLA (9th ed.)

Roberts, Morley. On the Trail: Through British Columbia After Forty Years. 1a. ed. Eveleigh Nash & Grayson, Ltd, 1927.