Gaya APA

Ripple, W, J. (1987). GIS For Resource Management: A Compendium . Bogor.: Amerian Society For Photogrammetry And Remote Sensing and American Congress On Surveying And Mapping.

Gaya MLA

Ripple, William, J.. "GIS For Resource Management: A Compendium". Bogor.: Amerian Society For Photogrammetry And Remote Sensing and American Congress On Surveying And Mapping, 1987. Text.