Referanslar:
1. American Lung Association. Learn About Pneumonia. https://www.lung.org/lung-health-diseases/lung-disease-lookup/pneumonia/... Son erisim tarihi: 04.01.2021
2. American Lung Association. Pneumonia Symptoms and Diagnosis. https://www.lung.org/lung-health-diseases/lung-disease-lookup/ pneumonia/symptoms-and-diagnosis Son erisim tarihi: 04.01.2021

Referans:
1. CDC. Causes of Pneumonia. https://www.cdc.gov/pneumonia/causes.html Son erisim tarihi:04.01.2020

Referanslar:
1. American Lung Association. What Causes Pneumonia? https://www.lung.org/lung-health-diseases/lung-disease-lookup/pneumonia/... Son erisim tarihi: 04.01.2021
2. CDC. Causes of Pneumonia. https://www.cdc.gov/pneumonia/causes.html Son erisim tarihi: 04.01.2021

Referans:
1. American Lung Association. Pneumococcal Pneumonia. https://www.lung.org/lung-health-diseases/lung-disease-lookup/pneumonia/... Son erisim tarihi: 04.01.2020

Referans:
1. American Lung Association. Learn About Pneumonia. https://www.lung.org/lung-health-diseases/lung-disease-lookup/pneumonia/... Son erisim tarihi: 04.01.2021

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Referans:
1. Türk Toraks Dernegi. Zatürre (Pnömoni). https://toraks.org.tr/site/resources/aegrotationes/p/5 Son erisim tarihi: 04.01.2021

Referanslar:
1. American Lung Association. Preventing Pneumonia. https://www.lung.org/lung-health-diseases/lung-disease-lookup/pneumonia/... Son erisim tarihi: 04.01.2021
2. CDC. Pneumonia Can Be Prevented—Vaccines Can Help. https://www.cdc.gov/pneumonia/prevention.html Son erisim tarihi: 04.01.2021