APA (7 ম সংস্করণ) উদ্ধৃতি

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

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

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

M.L.A (8 ম সংস্করণ) উদ্ধৃতি

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