Citação norma APA

Sengar, R., & Kumar, A. (2017). Environment science question bank: A handbook for competitive examinations. CBS Publishers.

Citação norma Chicago

Sengar, R.S, e Amit Kumar. Environment Science Question Bank: A Handbook for Competitive Examinations. New Delhi: CBS Publishers, 2017.

Citação norma MLA

Sengar, R.S, e Amit Kumar. Environment Science Question Bank: A Handbook for Competitive Examinations. CBS Publishers, 2017.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.