Education, N. C. W. C. B. o. (1921). Laws and Regulations Relative to Certification of Teachers. Washington, D.C..
Citação do estilo Chicago (17ª ed.)Education, National Catholic Welfare Council.; Bureau of. Laws and Regulations Relative to Certification of Teachers. Washington, D.C., 1921.
Citação MLA (8ª ed.)Education, National Catholic Welfare Council.; Bureau of. Laws and Regulations Relative to Certification of Teachers. Washington, D.C., 1921.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.