APA   Click to copy
Xie, Q., & Chen, W. Enhancing the Scalability and Impact of the Motherly App for Postnatal Depression [Letter]. Manuscript under Review.

Chicago/Turabian   Click to copy
Xie, Qiang, and Weiying Chen. “Enhancing the Scalability and Impact of the Motherly App for Postnatal Depression [Letter].” Manuscript under review (n.d.).

MLA   Click to copy
Xie, Qiang, and Weiying Chen. “Enhancing the Scalability and Impact of the Motherly App for Postnatal Depression [Letter].” Manuscript under Review.

@article{qiang-a,
  title = {Enhancing the Scalability and Impact of the Motherly App for Postnatal Depression [Letter]},
  journal = {Manuscript under review},
  author = {Xie, Qiang and Chen, Weiying}
}