Cita APA (7th ed.)
LEE, D., & MARKIDES, K. (1990). ACTIVITY AND MORTALITY AMONG AGED PERSONS OVER AN EIGHT-YEAR PERIOD.
Cita Chicago (17th ed.)
LEE, D.J, i K.S MARKIDES. ACTIVITY AND MORTALITY AMONG AGED PERSONS OVER AN EIGHT-YEAR PERIOD. 1990.
Cita MLA (9th ed.)
LEE, D.J, i K.S MARKIDES. ACTIVITY AND MORTALITY AMONG AGED PERSONS OVER AN EIGHT-YEAR PERIOD. 1990.
Atenció: Aquestes cites poden no estar 100% correctes.