Healthline. https://www.healthline.com/health/mens-health/mens-guide-healthy-fertile-sperm
Diakses pada 10 September 2020Healthline. https://www.healthline.com/health/fertility/how-to-increase-sperm-count
Diakses pada 10 September 2020Very Well Family. https://www.verywellfamily.com/what-if-your-semen-analysis-results-are-abnormal-1960164
Diakses pada 10 September 2020