APA-viite

SINGH, H. P., & TRIPATHI, R. P. (1998). SOIL EROSION AND CONSERVATION.

Chicago-tyylinen lähdeviittaus

SINGH, H P., ja R P. TRIPATHI. SOIL EROSION AND CONSERVATION. NEW DELHI, NEW AGE INTERNATIONAL, 1998.

MLA-viite

SINGH, H P., ja R P. TRIPATHI. SOIL EROSION AND CONSERVATION. 1998.