APA
Pethick J., . (1984). An introduction to coastal geomorphology. London: Arnold-Heinmann.
Chicago
Pethick John, . 1984. An introduction to coastal geomorphology. London: Arnold-Heinmann.
Harvard
Pethick J., . (1984). An introduction to coastal geomorphology. London: Arnold-Heinmann.
MLA
Pethick John, . An introduction to coastal geomorphology. London: Arnold-Heinmann. 1984.