Cita APA (7a ed.)

(1970). Elementary mathematics; number systems and algebra [by] Anthony J. Pettofrezzo [and] Donald W. Hight.

Cita Chicago Style (17a ed.)

Elementary Mathematics; Number Systems and Algebra [by] Anthony J. Pettofrezzo [and] Donald W. Hight. 1970.

Cita MLA (9a ed.)

Elementary Mathematics; Number Systems and Algebra [by] Anthony J. Pettofrezzo [and] Donald W. Hight. 1970.