APA (7th ed.) Citation

Scharff, R. F. (1920). The hooder or bladder-nosed seal, cystophora cristats (Erxl.).

Chicago Style (17th ed.) Citation

Scharff, R. F. The Hooder or Bladder-nosed Seal, Cystophora Cristats (Erxl.). 1920.

MLA (9th ed.) Citation

Scharff, R. F. The Hooder or Bladder-nosed Seal, Cystophora Cristats (Erxl.). 1920.

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