Gaya APA

Sollers, A, A., Swanson, C, P. (1963). Ours is the earth appraising natural resources and coservation . New York: New York: Holt, Rinehart and Winston; 1963..

Gaya MLA

Sollers, Allan, A.., Swanson, Carl, P.. "Ours is the earth appraising natural resources and coservation". New York: New York: Holt, Rinehart and Winston; 1963., 1963. Text.