Texas A&M University. (1988). Costa Rica/Texas A&M University: Collaborative programs in mathematics and its teaching. A&M University.
Chicago-čujuhus (17. p.)Texas A&M University. Costa Rica/Texas A&M University: Collaborative Programs in Mathematics and Its Teaching. Texas, Estados Unidos: A&M University, 1988.
MLA-čujuhus (9. p.)Texas A&M University. Costa Rica/Texas A&M University: Collaborative Programs in Mathematics and Its Teaching. A&M University, 1988.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.