Παραπομπή APA

Bear, F. E. (1964). Chemistry of the soil (2.). Oxford & IBH publishing company.

Παραπομπή Chicago Style

Bear, Firman E. Chemistry of the Soil. 2. Calcutta: Oxford & IBH publishing company, 1964.

Παραπομπή MLA

Bear, Firman E. Chemistry of the Soil. 2. Oxford & IBH publishing company, 1964.