APA Citation

O'Brien, B. R. (1999). Our national parks and the search for sustainability / Bob R. O'Brien ; drawings by Gary O'Brien: Bob R. O'Brien ; drawings by Gary O'Brien. Austin: University of Texas Press.

Chicago Style Citation

O'Brien, Bob R. Our National Parks and the Search for Sustainability / Bob R. O'Brien ; Drawings By Gary O'Brien: Bob R. O'Brien ; Drawings By Gary O'Brien. Austin: University of Texas Press, 1999.

MLA Citation

O'Brien, Bob R. Our National Parks and the Search for Sustainability / Bob R. O'Brien ; Drawings By Gary O'Brien: Bob R. O'Brien ; Drawings By Gary O'Brien. Austin: University of Texas Press, 1999.

Warning: These citations may not always be 100% accurate.