APA-viite

Porwal, M. (1997). Remote sensing analysis of environmental resources for planning and development. APH publishing corporation.

Chicago-tyylinen lähdeviittaus

Porwal, M.C. Remote Sensing Analysis of Environmental Resources for Planning and Development. New Delhi: APH publishing corporation, 1997.

MLA-viite

Porwal, M.C. Remote Sensing Analysis of Environmental Resources for Planning and Development. APH publishing corporation, 1997.