Hamblin, W. K., & Murphy, J. R. (1969). Grand Canyon perspectives: A guide to the canyon scenery by means of interpretive panoramas. W. Kenneth Hamblin and Joseph R. Murphy.
Citazione stile Chigago Style (17a edizione)Hamblin, W. Kenneth, e Joseph Robison Murphy. Grand Canyon Perspectives: A Guide to the Canyon Scenery by Means of Interpretive Panoramas. [Provo, Utah: W. Kenneth Hamblin and Joseph R. Murphy, 1969.
Citatione MLA (8a ed.)Hamblin, W. Kenneth, e Joseph Robison Murphy. Grand Canyon Perspectives: A Guide to the Canyon Scenery by Means of Interpretive Panoramas. W. Kenneth Hamblin and Joseph R. Murphy, 1969.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.