Images of Mars :
the Viking extended mission /
collected by Michael H. Carr and Nancy Evans.
APA Citation
Carr, M. H. (Michael H.)., Evans, N. (1980). Images of Mars: the Viking extended mission. Washington, D.C.: Scientific and Technical Information Branch, National Aeronautics and Space Administration : for sale by the Supt. of Docs., U.S. Govt. Print. Off..
MLA Citation
Carr, M. H. (Michael H.), and Nancy Evans. Images of Mars: the Viking Extended Mission. Washington, D.C.: Scientific and Technical Information Branch, National Aeronautics and Space Administration : for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1980.
Warning: These citations may not always be complete (especially for serials).