APA (7. basım) Alıntı

De la Pena, C. R. A study of difficulties in teaching Elementary Mathematics encountered by student teachers and interns of the Philippine Normal College.

Chicago Style (17. basım) Atıf

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

MLA (9th ed.) Atıf

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