Readers should cite both the Bio-protocol preprint and the original research article where this protocol was used:

Sinclair, L(2020). Radiolabelled nutrient uptake for suspension cells. Bio-protocol Preprint. bio-protocol.org/prep209.
Sinclair, L. V., Howden, A. J., Brenes, A., Spinelli, L., Hukelmann, J. L., Macintyre, A. N., Liu, X., Thomson, S., Taylor, P. M., Rathmell, J. C., Locasale, J. W., Lamond, A. I. and Cantrell, D. A.(2019). Antigen receptor control of methionine metabolism in T cells. eLIFE. DOI: 10.7554/eLife.44210