Gaya APA
White, Mel. ().
Complete National Parks of the United States .
Washington D.C:
National Geographic Society.
Gaya Chicago
White, Mel.
Complete National Parks of the United States.
Washington D.C:
National Geographic Society,
.
Teks.
Gaya MLA
White, Mel.
Complete National Parks of the United States.
Washington D.C:
National Geographic Society,
.
Teks.
Gaya Turabian
White, Mel.
Complete National Parks of the United States.
Washington D.C:
National Geographic Society,
.
Teks.