APA
Gregory K. J., . (1987). Energetics of physical environment: energetic approaches to physical geography. Chichester [etc.]: John Wiley & Sons.
Chicago
Gregory Kenneth John, . 1987. Energetics of physical environment: energetic approaches to physical geography. Chichester [etc.]: John Wiley & Sons.
Harvard
Gregory K. J., . (1987). Energetics of physical environment: energetic approaches to physical geography. Chichester [etc.]: John Wiley & Sons.
MLA
Gregory Kenneth John, . Energetics of physical environment: energetic approaches to physical geography. Chichester [etc.]: John Wiley & Sons. 1987.