APA (7th ed.) Citation
PERRY, P., & ET AL. (1993). INSTRUCTION ON CONCRETE OPERATIONS FOR CHILDREN WHO ARE MILDLY MENTALLY RETARDED.
Chicago Style (17th ed.) Citation
PERRY, P., and ET AL. INSTRUCTION ON CONCRETE OPERATIONS FOR CHILDREN WHO ARE MILDLY MENTALLY RETARDED. 1993.
MLA (9th ed.) Citation
PERRY, P., and ET AL. INSTRUCTION ON CONCRETE OPERATIONS FOR CHILDREN WHO ARE MILDLY MENTALLY RETARDED. 1993.
Warning: These citations may not always be 100% accurate.