Dyfyniad APA

Johnson, C. E. a. M. D., & Mac Donald, M. (1971). Society And The Enviornment Contemporary Readings. Van Nostrand Reinhold Company.

Dyfyniad Arddull Chicago

Johnson, Cecil E and Mac Donald, and Malcolm Mac Donald. Society And The Enviornment Contemporary Readings. New York: Van Nostrand Reinhold Company, 1971.

Dyfyniad MLA

Johnson, Cecil E and Mac Donald, and Malcolm Mac Donald. Society And The Enviornment Contemporary Readings. Van Nostrand Reinhold Company, 1971.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.