California. Joint Committee on School Health. (1953). A guide for vision screening of school children in the public schools of California. California State Dept. of Education.
Cita Chicago (17th ed.)California. Joint Committee on School Health. A Guide for Vision Screening of School Children in the Public Schools of California. Sacramento, Calif: California State Dept. of Education, 1953.
Cita MLA (9th ed.)California. Joint Committee on School Health. A Guide for Vision Screening of School Children in the Public Schools of California. California State Dept. of Education, 1953.
Atenció: Aquestes cites poden no estar 100% correctes.