APA (7th ed.) Citation
Porras, E., Burgos, G., Sosa, P., & Felde, T. z. (2014). Procedures for sampling and sample preparation of sweetpotato roots and potato tubers for mineral analysis. International Potato Center.
Chicago Style (17th ed.) Citation
Porras, E., G. Burgos, P. Sosa, and T. zum Felde. Procedures for Sampling and Sample Preparation of Sweetpotato Roots and Potato Tubers for Mineral Analysis. International Potato Center, 2014.
MLA (9th ed.) Citation
Porras, E., et al. Procedures for Sampling and Sample Preparation of Sweetpotato Roots and Potato Tubers for Mineral Analysis. International Potato Center, 2014.
Warning: These citations may not always be 100% accurate.