Burgess, Eric (1978). To the Red Planet. Columbia University Press. ISBN9780231043922.; see review: Singh, Gurbir (1993). "Eric Burgess, to the red planet, Columbia University Press, 1978, 181 pp., many pictures, diagrams, and illustrations, an epilogue and an index, $19.95". Astrophysics and Space Science. 201 (1 (February)): 160. doi:10.1007/BF00626999. S2CID121342862.
Burgess, Eric (1978). To the Red Planet. Columbia University Press. ISBN9780231043922.; see review: Singh, Gurbir (1993). "Eric Burgess, to the red planet, Columbia University Press, 1978, 181 pp., many pictures, diagrams, and illustrations, an epilogue and an index, $19.95". Astrophysics and Space Science. 201 (1 (February)): 160. doi:10.1007/BF00626999. S2CID121342862.
Burgess, Eric (1978). To the Red Planet. Columbia University Press. ISBN9780231043922.; see review: Singh, Gurbir (1993). "Eric Burgess, to the red planet, Columbia University Press, 1978, 181 pp., many pictures, diagrams, and illustrations, an epilogue and an index, $19.95". Astrophysics and Space Science. 201 (1 (February)): 160. doi:10.1007/BF00626999. S2CID121342862.
"Earth and Moon as Viewed from Mars". Earth Observatory. May 8, 2003. Archived from the original on August 6, 2003. Retrieved June 3, 2008. (JPL Horizons shows: 0.9304AU from Earth; Phase 43%; Sun Elongation 43°)
Burgess, Eric (1978). To the Red Planet. Columbia University Press. ISBN9780231043922.; see review: Singh, Gurbir (1993). "Eric Burgess, to the red planet, Columbia University Press, 1978, 181 pp., many pictures, diagrams, and illustrations, an epilogue and an index, $19.95". Astrophysics and Space Science. 201 (1 (February)): 160. doi:10.1007/BF00626999. S2CID121342862.
"Earth and Moon as Viewed from Mars". Earth Observatory. May 8, 2003. Archived from the original on August 6, 2003. Retrieved June 3, 2008. (JPL Horizons shows: 0.9304AU from Earth; Phase 43%; Sun Elongation 43°)