APA (7th ed.) Citation

Great Courses (Firm),$4dst, & Kanopy (Firm),$4dst. (2015). The Grand Canyon’s 2-Billion-Year Staircase. The Great Courses.

Chicago Style (17th ed.) Citation

Great Courses (Firm),$4dst, and Kanopy (Firm),$4dst. The Grand Canyon’s 2-Billion-Year Staircase. [San Francisco, California, USA]: The Great Courses, 2015.

MLA (9th ed.) Citation

Great Courses (Firm),$4dst, and Kanopy (Firm),$4dst. The Grand Canyon’s 2-Billion-Year Staircase. The Great Courses, 2015.