Ayers, F. (1954). Theory and problems of plane and spherical trignometry. McGraw-Hill.
Chicago-стиль цитированияAyers, Frank. Theory and Problems of Plane and Spherical Trignometry. New york: McGraw-Hill, 1954.
MLA-цитированиеAyers, Frank. Theory and Problems of Plane and Spherical Trignometry. McGraw-Hill, 1954.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.