APA (7th ed.) Citation

Hurd, P. D. (1961). Biological education in American secondary schools, 1890-1960. American Institute of Biological Sciences.

Chicago Style (17th ed.) Citation

Hurd, Paul DeHart. Biological Education in American Secondary Schools, 1890-1960. Washington: American Institute of Biological Sciences, 1961.

MLA (8th ed.) Citation

Hurd, Paul DeHart. Biological Education in American Secondary Schools, 1890-1960. American Institute of Biological Sciences, 1961.

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