Cita APA (7th ed.)

Weigel, G., & Madden, A. (1961). Knowledge: Its values and limits. Prentice-Hall.

Cita Chicago (17th ed.)

Weigel, Gustave, i Arthur Madden. Knowledge: Its Values and Limits. Englewood Cliffs, N.J: Prentice-Hall, 1961.

Cita MLA (9th ed.)

Weigel, Gustave, i Arthur Madden. Knowledge: Its Values and Limits. Prentice-Hall, 1961.