APA
Singh S. P., . (1998). Handbook of Agroforestry. New Delhi: Oxford University.
Chicago
Singh S P, . 1998. Handbook of Agroforestry. New Delhi: Oxford University.
Harvard
Singh S. P., . (1998). Handbook of Agroforestry. New Delhi: Oxford University.
MLA
Singh S P, . Handbook of Agroforestry. New Delhi: Oxford University. 1998.
