Cita APA (7th ed.)

SUMMERS G.J. (1994). PUZZLES AND TEASERS. JAICO PUB.

Cita Chicago (17th ed.)

SUMMERS G.J. PUZZLES AND TEASERS. BOMBAY: JAICO PUB, 1994.

Cita MLA (9th ed.)

SUMMERS G.J. PUZZLES AND TEASERS. JAICO PUB, 1994.