Cita APA (7th ed.)

Black, K., & Skipper, H. D. (1987). Life insurance (Rev. 11th ed.). Prentice-Hall.

Cita Chicago (17th ed.)

Black, Kenneth, i Harold D. Skipper. Life Insurance. Rev. 11th ed. Englewood Cliffs, N.J: Prentice-Hall, 1987.

Cita MLA (9th ed.)

Black, Kenneth, i Harold D. Skipper. Life Insurance. Rev. 11th ed. Prentice-Hall, 1987.