APA

Candelas de Cruz A. S., . (1954). English as a second language in Puerto Rico; linguistic principles underlying the experiment in the teaching of English as a second language in Puerto Rico: designed for elementary school teachers. [Río Piedras, P.R.]: College of Education, University of Puerto Rico.

Chicago

Candelas de Cruz Aida S, . 1954. English as a second language in Puerto Rico; linguistic principles underlying the experiment in the teaching of English as a second language in Puerto Rico: designed for elementary school teachers. [Río Piedras, P.R.]: College of Education, University of Puerto Rico.

Harvard

Candelas de Cruz A. S., . (1954). English as a second language in Puerto Rico; linguistic principles underlying the experiment in the teaching of English as a second language in Puerto Rico: designed for elementary school teachers. [Río Piedras, P.R.]: College of Education, University of Puerto Rico.

MLA

Candelas de Cruz Aida S, . English as a second language in Puerto Rico; linguistic principles underlying the experiment in the teaching of English as a second language in Puerto Rico: designed for elementary school teachers. [Río Piedras, P.R.]: College of Education, University of Puerto Rico. 1954.