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

Liu, F(2021). TRITC-transferrin internalization assay. Bio-protocol Preprint. bio-protocol.org/prep1202.
Heng, J., Lv, P., Zhang, Y., Cheng, X., Wang, L., Ma, D., Liu, F., Jiang, D., Jiang, D., Jiang, D. and Jiang, D.(2020). Rab5c-mediated endocytic trafficking regulates hematopoietic stem and progenitor cell development via Notch and AKT signaling. PLoS Biology 18(4). DOI: 10.1371/journal.pbio.3000696