Gaya APA

Smith, V, K., Etitors, J, V, K. (1982). Explorations in Natural Resource Economics . Baltmore: Published or Reources For te, Inc. By te Johns.

Gaya MLA

Smith, V., Kerry., Etitors, John, V., Krutilla,. "Explorations in Natural Resource Economics". Baltmore: Published or Reources For te, Inc. By te Johns, 1982. Text.