Cita APA (7th ed.)

Pillai, N. (1972). Problems on statistics (1st.). Progressive Co. Pvt. Ltd.

Cita Chicago (17th ed.)

Pillai, N. Problems on Statistics. 1st. NULL: Progressive Co. Pvt. Ltd, 1972.

Cita MLA (9th ed.)

Pillai, N. Problems on Statistics. 1st. Progressive Co. Pvt. Ltd, 1972.