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Book Chapter
Leith I.D., van Dijk N., Pitcairn C.E.R., Sheppard L.J., Sutton M.A..  2009.  Standardised Grasses as Biomonitors of Ammonia Pollution Around Agricultural Point Sources. Atmospheric Ammonia. :269-279.
Dragosits U., Dore A.J, Sheppard L.J., Vieno M., Tang Y.S., Theobald M., Sutton M..  2008.  Sources, dispersion and fate of atmospheric ammonia. Nitrogen in the Environment - Sources, Problems, and Management. :333-393.
Cape J.N., van der Eerden L.J., Sheppard L.J., Leith I.D., Sutton M.A..  2009.  Reassessment of Critical Levels for Atmospheric Ammonia. Atmospheric Ammonia. :15-40.
Sutton M.A., Sheppard L.J., Fowler D..  2009.  Potential for the Further Development and Application of Critical Levels to Assess the Environmental Impacts of Ammonia. Atmospheric Ammonia. :41-48.
Sheppard L.J., Leith I.D., Leeson S., van Dijk N., Cape J.N., Fowler D., Field C..  2011.  Nitrogen form makes a difference to the responses of a peatland to enhanced reactive nitrogen deposition [abstract]. Book of Abstracts: Joint Society of Wetland Scientists. :289.
Sheppard L.J., Leith I.D., Crossley A., van Dijk N., Cape J.N., Fowler D., Sutton M.A..  2009.  Long-Term Cumulative Exposure Exacerbates the Effects of Atmospheric Ammonia on an Ombrotrophic Bog: Implications for Critical Levels. Atmospheric Ammonia. :49-58.
Sheppard L.J., Leith I.D., Kivimaki S.K., Gaiawyn J..  2014.  The form of reactive nitrogen deposition is important for the provision of ecosystem services. Nitrogen Deposition, Critical Loads and Biodiversity.
Sheppard L.J., Leith I.D., Crossley A..  2004.  Effects of enhanced N deposition on Cladonia portentosa; results from a field manipulation study.. Nitrogen in the Envrionment.
Sheppard L.J., Wallander H..  2005.  Atmospheric Nitrogen – Pollutant or fertiliser? Nitrogen Acquisition and assimilation in Higher Plants . :65-98.