Cita APA (7a ed.)

Erikson, E. H., Erikson, J. M., & Kivnick, H. Q. (1986). Vital involvement in old age. W.W.Norton.

Cita Chicago Style (17a ed.)

Erikson, Erik H., Joan M. Erikson, y Helen Q. Kivnick. Vital Involvement in Old Age. New York ; London: W.W.Norton, 1986.

Cita MLA (9a ed.)

Erikson, Erik H., et al. Vital Involvement in Old Age. W.W.Norton, 1986.