APA

Loelkes G. L., Howard G. E., Schwertz E. L., Lampert P. D., Miller S. W. & United States Geological Survey. (1983). Land use/land cover and environmental photointerpretation keys. Washington: United States Government Printing Office.

Chicago

Loelkes George L, Howard Gordon E, Schwertz Eddie L, Lampert Phillip D, Miller Stephan W and United States Geological Survey. 1983. Land use/land cover and environmental photointerpretation keys. Washington: United States Government Printing Office.

Harvard

Loelkes G. L., Howard G. E., Schwertz E. L., Lampert P. D., Miller S. W. and United States Geological Survey. (1983). Land use/land cover and environmental photointerpretation keys. Washington: United States Government Printing Office.

MLA

Loelkes George L, Howard Gordon E, Schwertz Eddie L, Lampert Phillip D, Miller Stephan W and United States Geological Survey. Land use/land cover and environmental photointerpretation keys. Washington: United States Government Printing Office. 1983.