APA (7th ed.) Citation
OLSEN, R., & ET AL. (1992). SOCIAL NETWORKS AND LONGEVITY. A 14 YEAR FOLLOW-UP STUDY AMONG ELDERLY IN DENMARK.
Chicago Style (17th ed.) Citation
OLSEN, R.B, and ET AL. SOCIAL NETWORKS AND LONGEVITY. A 14 YEAR FOLLOW-UP STUDY AMONG ELDERLY IN DENMARK. 1992.
MLA (9th ed.) Citation
OLSEN, R.B, and ET AL. SOCIAL NETWORKS AND LONGEVITY. A 14 YEAR FOLLOW-UP STUDY AMONG ELDERLY IN DENMARK. 1992.
Warning: These citations may not always be 100% accurate.