APA (7th ed.) Citation

(1987). The New Encyclopaedia Britannica Volume 19 [Excretion and excretory system]. The University of Chicago.

Chicago Style (17th ed.) Citation

The New Encyclopaedia Britannica Volume 19 [Excretion and Excretory System]. The University of Chicago, 1987.

MLA (8th ed.) Citation

The New Encyclopaedia Britannica Volume 19 [Excretion and Excretory System]. The University of Chicago, 1987.

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