APA (7th ed.) Citation

Spornyak, S. O., & Volvak, Y. S. (2013). Proportionality's Analysis of Regional Development.

Chicago Style (17th ed.) Citation

Spornyak, S. O., and Yu. S. Volvak. Proportionality's Analysis of Regional Development. 2013.

MLA (8th ed.) Citation

Spornyak, S. O., and Yu. S. Volvak. Proportionality's Analysis of Regional Development. 2013.

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