APA-Zitierstil (7. Ausg.)

De La Pena, C. R. (1972). A study of difficulties in teaching elementary mathematics encountered by student teachers and interns of the Philippine Normal College.

Chicago-Zitierstil (17. Ausg.)

De La Pena, Carmen Relunia. A Study of Difficulties in Teaching Elementary Mathematics Encountered by Student Teachers and Interns of the Philippine Normal College. 1972.

MLA-Zitierstil (9. Ausg.)

De La Pena, Carmen Relunia. A Study of Difficulties in Teaching Elementary Mathematics Encountered by Student Teachers and Interns of the Philippine Normal College. 1972.

Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.