University of Colorado (Boulder campus). Bureau of Business Research, Colorado Springs Chamber of Commerce, & Crampon, L. J. (1953). The Pikes Peak region as a tourist resort.
Chicago-viite (17. p.)University of Colorado (Boulder campus). Bureau of Business Research, Colorado Springs Chamber of Commerce, ja L. J. Crampon. The Pikes Peak Region as a Tourist Resort. Boulder, 1953.
MLA-viite (8. p.)University of Colorado (Boulder campus). Bureau of Business Research, et al. The Pikes Peak Region as a Tourist Resort. 1953.
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