APA (7th ed.) Citation
SLOPER, P., & ET AL. (1990). SOCIAL LIFE OF SCHOOL CHILDREN WITH DOWN'S SYNDROME.
Chicago Style (17th ed.) Citation
SLOPER, P., and ET AL. SOCIAL LIFE OF SCHOOL CHILDREN WITH DOWN'S SYNDROME. 1990.
MLA (9th ed.) Citation
SLOPER, P., and ET AL. SOCIAL LIFE OF SCHOOL CHILDREN WITH DOWN'S SYNDROME. 1990.
Warning: These citations may not always be 100% accurate.