Drukker, L., Yasrab, R., Noble, J., & Papageorghiou, A. (2021). VP18.07: First trimester scans: how much time does it take to acquire the CRL and NT? Wiley.
Lua i Stíl Chicago (17ú heag.)Drukker, L., R. Yasrab, JA Noble, agus AT Papageorghiou. VP18.07: First Trimester Scans: How Much Time Does It Take to Acquire the CRL and NT? Wiley, 2021.
Lua MLA (9ú heag.)Drukker, L., et al. VP18.07: First Trimester Scans: How Much Time Does It Take to Acquire the CRL and NT? Wiley, 2021.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.