APA (7th ed.) Citation

Schoefer, G. (1989). Systems thinking in biology education. Division of Science Technical and Environmental Education Unesco.

Chicago Style (17th ed.) Citation

Schoefer, Gerhard. Systems Thinking in Biology Education. Paris: Division of Science Technical and Environmental Education Unesco, 1989.

MLA (9th ed.) Citation

Schoefer, Gerhard. Systems Thinking in Biology Education. Division of Science Technical and Environmental Education Unesco, 1989.

Warning: These citations may not always be 100% accurate.