APA (7th ed.) Citation

Shishkov, T., & Kolev, N. (2014). The Soils of Bulgaria. Springer Netherlands : Imprint: Springer.

Chicago Style (17th ed.) Citation

Shishkov, Toma, and Nikola Kolev. The Soils of Bulgaria. Dordrecht: Springer Netherlands : Imprint: Springer, 2014.

MLA (8th ed.) Citation

Shishkov, Toma, and Nikola Kolev. The Soils of Bulgaria. Springer Netherlands : Imprint: Springer, 2014.

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