Melcon, P. Z. (1987). Physical geography: Landscape interpretation (2nd ed.). Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)Melcon, Penelope Z. Physical Geography: Landscape Interpretation. 2nd ed. New Jersey: Prentice-Hall, 1987.
Lua MLA (9ú heag.)Melcon, Penelope Z. Physical Geography: Landscape Interpretation. 2nd ed. Prentice-Hall, 1987.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.