APA (7th ed.) Citation

Mortensen, T. A monograph of the Echinoidea. Reitzel [u.a.].

Chicago Style (17th ed.) Citation

Mortensen, Theodor. A Monograph of the Echinoidea. Copenhagen: Reitzel [u.a.].

MLA (9th ed.) Citation

Mortensen, Theodor. A Monograph of the Echinoidea. Reitzel [u.a.].

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