APA (7th ed.) Citation

National Geographic Society (Spojené štáty americké). Special Publications Division. (1991). Pathways to discovery: Exploring America's national trails. National Geographic Society.

Chicago Style (17th ed.) Citation

National Geographic Society (Spojené štáty americké). Special Publications Division. Pathways to Discovery: Exploring America's National Trails. Washington: National Geographic Society, 1991.

MLA (9th ed.) Citation

National Geographic Society (Spojené štáty americké). Special Publications Division. Pathways to Discovery: Exploring America's National Trails. National Geographic Society, 1991.