APA استشهاد

Ayres, F. (1954). Theory and problems of place and spherical trigonometry. McGraw-Hill.

استشهاد بنمط شيكاغو

Ayres, Frank. Theory and Problems of Place and Spherical Trigonometry. New York: McGraw-Hill, 1954.

MLA استشهاد

Ayres, Frank. Theory and Problems of Place and Spherical Trigonometry. McGraw-Hill, 1954.