एपीए उद्धरण

Walker, B. S. (1978). rocky mountains. Time-Life Books.

शिकागो स्टाइल उद्धरण

Walker, Bryce S. Rocky Mountains. Amsterdam: Time-Life Books, 1978.

एमएलए उद्धरण

Walker, Bryce S. Rocky Mountains. Time-Life Books, 1978.