APA   Click to copy
Z., C., S.Y., L., Y., L., W., Z., Z., L., & W.*, L. (2021). Gomphostemma chinense f. purpurascens (Lamiaceae), a new forma endemic to China. Acta Phytotaxonomica Et Geobotanic, (in press).

Chicago/Turabian   Click to copy
Z., Chen, Lee S.Y., Li Y., Zhao W., Liu Z., and Liao W.*. “Gomphostemma Chinense f. Purpurascens (Lamiaceae), a New Forma Endemic to China.” Acta Phytotaxonomica Et Geobotanic (in press) (2021).

MLA   Click to copy
Z., Chen, et al. “Gomphostemma Chinense f. Purpurascens (Lamiaceae), a New Forma Endemic to China.” Acta Phytotaxonomica Et Geobotanic, vol. (in press), 2021.

@article{chen2021a,
  title = {Gomphostemma chinense f. purpurascens (Lamiaceae), a new forma endemic to China},
  year = {2021},
  journal = {Acta Phytotaxonomica Et Geobotanic},
  volume = {(in press)},
  author = {Z., Chen and S.Y., Lee and Y., Li and W., Zhao and Z., Liu and W.*, Liao}
}