APA (7th ed.) Citation

Nagel, C., Benjamin, N., Blank, N., Fischer, C., Lorenz, H., Grünig, E., & Egenlauf, B. (2015). Stress Doppler echocardiography for early detection of systemic sclerosis-associated pulmonary arterial hypertension. BioMed Central.

Chicago Style (17th ed.) Citation

Nagel, Christian, Nicola Benjamin, Norbert Blank, Christine Fischer, Hanns-Martin Lorenz, Ekkehard Grünig, and Benjamin Egenlauf. Stress Doppler Echocardiography for Early Detection of Systemic Sclerosis-associated Pulmonary Arterial Hypertension. London: BioMed Central, 2015.

MLA (9th ed.) Citation

Nagel, Christian, et al. Stress Doppler Echocardiography for Early Detection of Systemic Sclerosis-associated Pulmonary Arterial Hypertension. BioMed Central, 2015.