APA استشهاد

Longley-Cook, L. H. (1970). New math puzzles book. Van Nostrand Reinhold.

استشهاد بنمط شيكاغو

Longley-Cook, L. H. New Math Puzzles Book. New York: Van Nostrand Reinhold, 1970.

MLA استشهاد

Longley-Cook, L. H. New Math Puzzles Book. Van Nostrand Reinhold, 1970.