Ayers, F. (1954). Theory and problems of plane and spherical trignometry. McGraw-Hill.
Chicago Edition CitationAyers, Frank. Theory and Problems of Plane and Spherical Trignometry. New york: McGraw-Hill, 1954.
Cita MLAAyers, Frank. Theory and Problems of Plane and Spherical Trignometry. McGraw-Hill, 1954.
Atenció: Aquestes cites poden no estar 100% correctes.