APA
Landon J. R., . (1984). Booker tropical soil manual. London: Longman.
Chicago
Landon J R, . 1984. Booker tropical soil manual. London: Longman.
Harvard
Landon J. R., . (1984). Booker tropical soil manual. London: Longman.
MLA
Landon J R, . Booker tropical soil manual. London: Longman. 1984.