Tamayo, I. B., Nordstrom, C., & Bahena,.Magdalena C. (1969). Audio-visual materials in teaching science to the educable mentally retarded (primary level). College of Education, University of the Philippines Diliman.
Chicago-viite (17. p.)Tamayo, Imelda B., Carolyn Nordstrom, ja Bahena,.Magdalena C. Audio-visual Materials in Teaching Science to the Educable Mentally Retarded (primary Level). Quezon City: College of Education, University of the Philippines Diliman, 1969.
MLA-viite (9. p.)Tamayo, Imelda B., et al. Audio-visual Materials in Teaching Science to the Educable Mentally Retarded (primary Level). College of Education, University of the Philippines Diliman, 1969.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.