APA (7th ed.) Citation

Daniel M. Gelfman, M. The David Sign, Revisited. Elsevier.

Chicago Style (17th ed.) Citation

Daniel M. Gelfman, MD. The David Sign, Revisited. Elsevier.

MLA (9th ed.) Citation

Daniel M. Gelfman, MD. The David Sign, Revisited. Elsevier.

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