Cita APA (7th ed.)

GOSAIN , R. 101 INVENTIONS & DISCOVERIES. GOODWILL PUBLISHING HOUSE.

Cita Chicago (17th ed.)

GOSAIN , ROOPA. 101 INVENTIONS & DISCOVERIES. NEW DELHI: GOODWILL PUBLISHING HOUSE.

Cita MLA (9th ed.)

GOSAIN , ROOPA. 101 INVENTIONS & DISCOVERIES. GOODWILL PUBLISHING HOUSE.