Cita APA

Harrah, D. F. 1., & Harrah, B. K. (1975). Conservation ecology: Resources for environmental education. Metuchen, New Jersey: Scarecrow.

Citación estilo Chicago

Harrah, David F. 1949-, y Barbara K. Harrah. Conservation Ecology: Resources for Environmental Education. Metuchen, New Jersey: Scarecrow, 1975.

Cita MLA

Harrah, David F. 1949-, y Barbara K. Harrah. Conservation Ecology: Resources for Environmental Education. Metuchen, New Jersey: Scarecrow, 1975.