Παραπομπή APA

Ali Tahir & Narayan, S. (2009). Manual of soil plant and water analysis.

Παραπομπή Chicago Style

Ali Tahir και Sumati Narayan. Manual of Soil Plant and Water Analysis. New Delhi, 2009.

Παραπομπή MLA

Ali Tahir και Sumati Narayan. Manual of Soil Plant and Water Analysis. 2009.