Bear, F. E. (1964). Chemistry of the soil (2.). Oxford & IBH publishing company.
Chicago Style aipamenaBear, Firman E. Chemistry of the Soil. 2. Calcutta: Oxford & IBH publishing company, 1964.
MLA aipamenaBear, Firman E. Chemistry of the Soil. 2. Oxford & IBH publishing company, 1964.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.