Tohutoro APA (7th ed.)

Thybony Scot & Chesley, P. The rockies: Pillars of a continent. D.C..

Tohutoru Kātū Chicago (17th ed.)

Thybony Scot me Paul Chesley. The Rockies: Pillars of a Continent. Washington: D.C..

Tohutoro MLA (9th ed.)

Thybony Scot me Paul Chesley. The Rockies: Pillars of a Continent. D.C..