Additions to soil or substrate. - Earth Sciences bibliographies - in Harvard style

In-text: (Nitrogen for winter wheat – management guidelines, 2009)

Your Bibliography: 2009. Nitrogen for winter wheat – management guidelines. 1st ed. [ebook] Warwickshire: HGCA. Available at: <http://www.hgca.com/media/180204/g48-nitrogen-for-winter-wheat-management-guidelines.pdf> [Accessed 25 January 2015].

In-text: (Hasegawa, Bryant and Denison, 2000)

Your Bibliography: Hasegawa, H., Bryant, D. and Denison, R., 2000. Testing CERES model predictions of crop growth and N dynamics, in cropping systems with leguminous green manures in a Mediterranean climate. Field Crops Research, 67(3), pp.239-255.

In-text: (Heumann et al., 2013)

Your Bibliography: Heumann, S., Fier, A., Haßdenteufel, M., Höper, H., Schäfer, W., Eiler, T. and Böttcher, J., 2013. Minimizing nitrate leaching while maintaining crop yields: insights by simulating net N mineralization. Nutr Cycl Agroecosyst, 95(3), pp.395-408.

In-text: (Radersma and Smit, 2011)

Your Bibliography: Radersma, S. and Smit, A., 2011. Assessing denitrification and N leaching in a field with organic amendments. NJAS - Wageningen Journal of Life Sciences, 58(1-2), pp.21-29.

In-text: (Zheng, 2010)

Your Bibliography: Zheng, S., 2010. Crop production on acidic soils: overcoming aluminium toxicity and phosphorus deficiency. Annals of Botany, 106(1), pp.183-184.