APA (7th ed.) Citation

Perego, G. B. (2018). Why is PAP guided therapy effective? International Journal of Cardiology, 259, 137. https://doi.org/10.1016/j.ijcard.2017.12.096

Chicago Style (17th ed.) Citation

Perego, Giovanni B. "Why Is PAP Guided Therapy Effective?" International Journal of Cardiology 259 (2018): 137. https://doi.org/10.1016/j.ijcard.2017.12.096.

MLA (9th ed.) Citation

Perego, Giovanni B. "Why Is PAP Guided Therapy Effective?" International Journal of Cardiology, vol. 259, 2018, p. 137, https://doi.org/10.1016/j.ijcard.2017.12.096.

Warning: These citations may not always be 100% accurate.