Romer, T., Rüst, C. A., Zingg, M. A., Rosemann, T., & Knechtle, B. (2014). Age and ultra-marathon performance - 50 to 1,000 km distances from 1969 – 2012. Springerplus.
Stile di citazione ChicagoRomer, Tobias, Christoph Alexander Rüst, Matthias Alexander Zingg, Thomas Rosemann, e Beat Knechtle. "Age and Ultra-marathon Performance - 50 to 1,000 km Distances From 1969 – 2012." Springerplus 2014.
Citazione MLARomer, Tobias, et al. "Age and Ultra-marathon Performance - 50 to 1,000 km Distances From 1969 – 2012." Springerplus 2014.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.