APA

Townsend C. B., . (1993). World's greatest puzzles. New York: .

Chicago

Townsend Charles Barry, . 1993. World's greatest puzzles. New York: .

Harvard

Townsend C. B., . (1993). World's greatest puzzles. New York: .

MLA

Townsend Charles Barry, . World's greatest puzzles. New York: . 1993.