Tohutoro APA (7th ed.)

PETTOFREZZO, A. J. (1969). Number systems ; structure and: Properties. Scott, Foresman.

Tohutoru Kātū Chicago (17th ed.)

PETTOFREZZO, Anthony J. Number Systems ; Structure and: Properties. Glenview, Ill: Scott, Foresman, 1969.

Tohutoro MLA (9th ed.)

PETTOFREZZO, Anthony J. Number Systems ; Structure and: Properties. Scott, Foresman, 1969.