Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.