APA (7th ed.) Citation

Mortensen, T. (1933). Ophiuroidea. Luno.

Chicago Style (17th ed.) Citation

Mortensen, Theodor. Ophiuroidea. Copenhagen: Luno, 1933.

MLA (9th ed.) Citation

Mortensen, Theodor. Ophiuroidea. Luno, 1933.

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