Follow your professor's instruction for how to format your paper above all!
Making sense : a student's guide to research and writing : geography and environmental sciences / Margot Northey, David B. Knight, Dianne Draper
An introduction to scientific research methods in geography / Daniel R. Montello, Paul C. Sutton
Making sense : a student's guide to research and writing : social sciences / Margot Northey, Lorne Tepperman
Doing your social science dissertation / Judith Burnett
There is no single citation style used in Geography --either follow your professor's instructions or pick a style from a Geography journal. Citations can be tricky! Feel free to ask for help!