APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (8e ed.) Bronvermelding

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