Texas A&M University. (1988). Costa Rica/Texas A&M University: Collaborative programs in mathematics and its teaching. A&M University.
Lua i Stíl Chicago (17ú heag.)Texas A&M University. Costa Rica/Texas A&M University: Collaborative Programs in Mathematics and Its Teaching. Texas, Estados Unidos: A&M University, 1988.
Lua MLA (9ú heag.)Texas A&M University. Costa Rica/Texas A&M University: Collaborative Programs in Mathematics and Its Teaching. A&M University, 1988.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.