APA (7th ed.) Citation

National Geographic Maps (Firm). (2010). Goat Rocks, Norse Peak & William O. Douglas Wilderness Areas: Gifford Pinchot, Mt. Baker-Snoqualmie, & Okanogan-Wenatchee National Forests, Washington, USA ; Trails Illustrated. National Geographic Maps.

Chicago Style (17th ed.) Citation

National Geographic Maps (Firm). Goat Rocks, Norse Peak & William O. Douglas Wilderness Areas: Gifford Pinchot, Mt. Baker-Snoqualmie, & Okanogan-Wenatchee National Forests, Washington, USA ; Trails Illustrated. Evergreen, Colo.: National Geographic Maps, 2010.

MLA (9th ed.) Citation

National Geographic Maps (Firm). Goat Rocks, Norse Peak & William O. Douglas Wilderness Areas: Gifford Pinchot, Mt. Baker-Snoqualmie, & Okanogan-Wenatchee National Forests, Washington, USA ; Trails Illustrated. National Geographic Maps, 2010.