APA引文

Sardana, J. L., & Sehgal, R. L. (1983). Universal decimal classification: Structure and methodology. Ess Ess Pub..

Chicago Edition Citation

Sardana, J. L., and R. L. Sehgal. Universal Decimal Classification: Structure and Methodology. New Delhi: Ess Ess Pub., 1983.

MLA引文

Sardana, J. L., and R. L. Sehgal. Universal Decimal Classification: Structure and Methodology. Ess Ess Pub., 1983.

警告：这些引文格式不一定是100％准确.