APA-viite (7. p.)

HAFSTROM, J. E. (1967). Introduction to analysis and abstract algebra. Saunders.

Chicago-viite (17. p.)

HAFSTROM, John E. Introduction to Analysis and Abstract Algebra. London: Saunders, 1967.

MLA-viite (9. p.)

HAFSTROM, John E. Introduction to Analysis and Abstract Algebra. Saunders, 1967.