Cita APA (7th ed.)

Wittry, E. J. (1991). Functional analysis: Simplify before automating. Van Nostrand Reinhold.

Cita Chicago (17th ed.)

Wittry, Eugene J. Functional Analysis: Simplify Before Automating. New York: Van Nostrand Reinhold, 1991.

Cita MLA (9th ed.)

Wittry, Eugene J. Functional Analysis: Simplify Before Automating. Van Nostrand Reinhold, 1991.