Here you can read two state of the art reviews on Policy Formulation & Action Planning.

1) The integration of urban agriculture into urban polices.

Henk de Zeeuw, Sabine Guendel and Hermann Waibel
Thematic Paper 7. Growing Cities Growing Food, DSE.

The paper describes a range of policy options for UA suitable for enhancing its contribution to urban food security, urban economy and city ecology

2) Sustaining urban agriculture requires involvement of multiple stakeholders.

Marielle Dubbeling and Gunther Merzthal. Published in Cities Farming for the Future, Urban Agriculture for Green and Productive Cities. Edited by René van Veenhuizen. Published by RUAF, IDRC and IIRR.

This paper describes the need for and process of multi-stakeholder involvement in action planning and policy design for urban agriculture. Find the article here.