Cita APA (7th ed.)

Ferrini, A. F., & Ferrini, R. L. (1993). Health in the later years (2nd ed.). Brown & Benchmark.

Cita Chicago (17th ed.)

Ferrini, Armeda F., i Rebecca L. Ferrini. Health in the Later Years. 2nd ed. Madison, Wisc.: Brown & Benchmark, 1993.

Cita MLA (8th ed.)

Ferrini, Armeda F., i Rebecca L. Ferrini. Health in the Later Years. 2nd ed. Brown & Benchmark, 1993.