Dyfyniad APA

Oswald, M. J. (2017). Your guide to the national parks: The complete guide to all 59 parks. Whitelaw, WI: Stone Road Press.

Dyfyniad Arddull Chicago

Oswald, Michael Joseph. Your Guide to the National Parks: The Complete Guide to All 59 Parks. Whitelaw, WI: Stone Road Press, 2017.

Dyfyniad MLA

Oswald, Michael Joseph. Your Guide to the National Parks: The Complete Guide to All 59 Parks. Whitelaw, WI: Stone Road Press, 2017.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.