APA (7th ed.) Citation

Rocker, I. (1981). Fetoscopy. Elsevier [u.a.].

Chicago Style (17th ed.) Citation

Rocker, I. Fetoscopy. Amsterdam [u.a.]: Elsevier [u.a.], 1981.

MLA (9th ed.) Citation

Rocker, I. Fetoscopy. Elsevier [u.a.], 1981.