APA (7th ed.) Citation

Qiao, Z., Kou, Z., Zhang, J., Lv, D., Li, D., Cui, X., & Liu, K. Optimal vocal therapy for respiratory muscle activation in patients with COPD: Effects of loudness, pitch, and vowels. Frontiers Media S.A.

Chicago Style (17th ed.) Citation

Qiao, Zhengtong, Ziwei Kou, Jiazhen Zhang, Daozheng Lv, Dongpan Li, Xuefen Cui, and Kai Liu. Optimal Vocal Therapy for Respiratory Muscle Activation in Patients with COPD: Effects of Loudness, Pitch, and Vowels. Frontiers Media S.A.

MLA (9th ed.) Citation

Qiao, Zhengtong, et al. Optimal Vocal Therapy for Respiratory Muscle Activation in Patients with COPD: Effects of Loudness, Pitch, and Vowels. Frontiers Media S.A.