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

Jang, J and Kosik, K(2021). Spontaneous and lineage-directed differentiation of hESCs and hiPSCs. Bio-protocol Preprint. bio-protocol.org/prep1247.
Jang, J., Han, D., Golkaram, M., Audouard, M., Liu, G., Bridges, D., Hellander, S., Chialastri, A., Dey, S. S., Petzold, L. R. and Kosik, K. S.(2019). Control over single-cell distribution of G1 lengths by WNT governs pluripotency. PLoS Biology 17(9). DOI: 10.1371/journal.pbio.3000453