Não informado. (1969). Journal of Undergraduate Mathematics. Guilford College, Department of Mathematics.
Citação do estilo Chicago (17ª ed.)Não informado. Journal of Undergraduate Mathematics. Greensboro, NC: Guilford College, Department of Mathematics, 1969.
Citação MLA (8ª ed.)Não informado. Journal of Undergraduate Mathematics. Guilford College, Department of Mathematics, 1969.
警告：這些引文格式不一定是100％准確.