Ferrini, A. F., & Ferrini, R. L. (1993). Health in the later years (2nd ed.). Brown & Benchmark.
Chicago Style aipamenaFerrini, Armeda F., and Rebecca L. Ferrini. Health in the Later Years. 2nd ed. Madison, Wisc.: Brown & Benchmark, 1993.
MLA aipamenaFerrini, Armeda F., and Rebecca L. Ferrini. Health in the Later Years. 2nd ed. Brown & Benchmark, 1993.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.