APA-viite (7. p.)

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

Chicago-viite (17. p.)

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

MLA-viite (9. p.)

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