APA (7th ed.) Citation

Castro, A. M. (1963). Quizzer on labor and social legislation. S.n.

Chicago Style (17th ed.) Citation

Castro, Antonio M. Quizzer on Labor and Social Legislation. S.l: S.n, 1963.

MLA (9th ed.) Citation

Castro, Antonio M. Quizzer on Labor and Social Legislation. S.n, 1963.