Talisayon, V. M. (1983). A feedback-based readability formula for science and mathematics curriculum matrials. Science Education Center, University of the Philippines.
Lua i Stíl Chicago (17ú heag.)Talisayon, Vivien M. A Feedback-based Readability Formula for Science and Mathematics Curriculum Matrials. Quezon City: Science Education Center, University of the Philippines, 1983.
Lua MLA (9ú heag.)Talisayon, Vivien M. A Feedback-based Readability Formula for Science and Mathematics Curriculum Matrials. Science Education Center, University of the Philippines, 1983.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.