Cita APA

Otho E. Perkins. (1981). Teacher's guide: Work-a-text in physical science. New York: Globe Book.

Chicago Style Citation

Otho E. Perkins. Teacher's Guide: Work-a-text in Physical Science. New York: Globe Book, 1981.

Cita MLA

Otho E. Perkins. Teacher's Guide: Work-a-text in Physical Science. New York: Globe Book, 1981.

Atenció: Aquestes cites poden no estar 100% correctes.