APA-referens

Shilpa Shyam & Verma, H. B. (2006). Air pollution and its impact on plant growth. New India Publishing Agency.

Chicago-stil citat

Shilpa Shyam och H.N. Bhargava Verma. Air Pollution and Its Impact on Plant Growth. New Delhi: New India Publishing Agency, 2006.

MLA-referens

Shilpa Shyam och H.N. Bhargava Verma. Air Pollution and Its Impact on Plant Growth. New India Publishing Agency, 2006.