Cita APA (7th ed.)

George, R. (1973). Environmental conservation "program design": A compilation of teachers' suggestions for developing "basic" concepts and K-12 curriculum organization. s.n.].

Cita Chicago (17th ed.)

George, R.W. Environmental Conservation "Program Design": A Compilation of Teachers' Suggestions for Developing "Basic" Concepts and K-12 Curriculum Organization. [s.l: s.n.], 1973.

Cita MLA (9th ed.)

George, R.W. Environmental Conservation "Program Design": A Compilation of Teachers' Suggestions for Developing "Basic" Concepts and K-12 Curriculum Organization. s.n.], 1973.