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

Castillo-González, C and Zhang, X(2021). In vitro pull down and Co-IP assays. Bio-protocol Preprint. bio-protocol.org/prep790.
Castillo-González, C., Liu, X., Huang, C., Zhao, C., Ma, Z., Hu, T., Sun, F., Zhou, Y., Zhou, X., Wang, X. and Zhang, X.(2015). Geminivirus-encoded TrAP suppressor inhibits the histone methyltransferase SUVH4/KYP to counter host defense. eLIFE. DOI: 10.7554/eLife.06671