APA (7th ed.) Citation

Gupta, V. K., Rajendra N., G., Ram A., S., & unknown. (2009). Comparative studies of neodymium (III)-selective PVC membrane sensors.

Chicago Style (17th ed.) Citation

Gupta, Vinod K., Goyal Rajendra N., Sharma Ram A., and unknown. Comparative Studies of Neodymium (III)-selective PVC Membrane Sensors. 2009.

MLA (9th ed.) Citation

Gupta, Vinod K., et al. Comparative Studies of Neodymium (III)-selective PVC Membrane Sensors. 2009.

Warning: These citations may not always be 100% accurate.