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

Nayak, S and Cantor, S B(2020). Immunofluorescence staining protocol to detect ssDNA (CldU) and active replication (EdU). Bio-protocol Preprint. bio-protocol.org/prep436.
Nayak, S., Calvo, J. A., Cong, K., Peng, M., Berthiaume, E., Jackson, J., Zaino, A. M., Vindigni, A., Hadden, M. K. and Cantor, S. B.(2020). Inhibition of the translesion synthesis polymerase REV1 exploits replication gaps as a cancer vulnerability . Science Advances 6(24). DOI: 10.1126/sciadv.aaz7808