APA
(1956). The Journal of Soil Science Nos (1 &2). : Oxford University Press London.
Chicago
1956. The Journal of Soil Science Nos (1 &2). : Oxford University Press London.
Harvard
(1956). The Journal of Soil Science Nos (1 &2). : Oxford University Press London.
MLA
The Journal of Soil Science Nos (1 &2). : Oxford University Press London. 1956.
