LANEGRAN, D. A. (1978). An invitation to geography. McGraw-Hill.
Chicago Style (17th ed.) ZitazioaLANEGRAN, David A. An Invitation to Geography. New York: McGraw-Hill, 1978.
MLA (9th ed.) ZitazioaLANEGRAN, David A. An Invitation to Geography. McGraw-Hill, 1978.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.