APA

Clawson M., . (1968). The land system of the United States: an introduction to the history and practice of land use and land tenure. Lincoln: University of Nebraska Press.

Chicago

Clawson Marion, . 1968. The land system of the United States: an introduction to the history and practice of land use and land tenure. Lincoln: University of Nebraska Press.

Harvard

Clawson M., . (1968). The land system of the United States: an introduction to the history and practice of land use and land tenure. Lincoln: University of Nebraska Press.

MLA

Clawson Marion, . The land system of the United States: an introduction to the history and practice of land use and land tenure. Lincoln: University of Nebraska Press. 1968.