Science Education Center, U. o. t. P. (1972). Elementary school mathematics 1. Science Education Center, University of the Philippines.
Lua i Stíl Chicago (17ú heag.)Science Education Center, University of the Philippines. Elementary School Mathematics 1. Quezon City: Science Education Center, University of the Philippines, 1972.
Lua MLA (9ú heag.)Science Education Center, University of the Philippines. Elementary School Mathematics 1. Science Education Center, University of the Philippines, 1972.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.