Brennan, M. J. (1969). People and their environment: Teachers' curriculum guide to conservation education. Feruguson Publ. Co.
Chicago-Zitierstil (17. Ausg.)Brennan, Matthew J. People and Their Environment: Teachers' Curriculum Guide to Conservation Education. Chicago, Ill: Feruguson Publ. Co, 1969.
MLA-Zitierstil (9. Ausg.)Brennan, Matthew J. People and Their Environment: Teachers' Curriculum Guide to Conservation Education. Feruguson Publ. Co, 1969.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.