Gaya APA

Healy, R, G., Rosenberg, J, S. (1979). Land Use and the states . Resources for the future: IPMI, ECOLINK GM.

Gaya MLA

Healy, Robert, G.., Rosenberg, John, S.. "Land Use and the states". Resources for the future: IPMI, ECOLINK GM, 1979. Text.