Cita APA (7th ed.)

Menard, S. W. (1991). Longitudinal research. Sage.

Cita Chicago (17th ed.)

Menard, Scott W. Longitudinal Research. Newbury Park, Calif: Sage, 1991.

Cita MLA (9th ed.)

Menard, Scott W. Longitudinal Research. Sage, 1991.