Citazione APA

Gupta, K. B., Mathur, R. N., & Sukla, R. D. Teaching of Science in Secondary Schools.

Stile di citazione Chicago

Gupta, K B., R N. Mathur, e R D. Sukla. Teaching of Science in Secondary Schools. New Delhi, NCERT.

Citazione MLA

Gupta, K B., et al. Teaching of Science in Secondary Schools.