Cita APA (7a ed.)

Frankena, W. K. (1963). Ethics. Prentice-Hall.

Cita Chicago Style (17a ed.)

Frankena, William K. Ethics. Englewood Cliffs, New Jersey: Prentice-Hall, 1963.

Cita MLA (9a ed.)

Frankena, William K. Ethics. Prentice-Hall, 1963.