APA (7th ed.) Citation

ScienceDirect (Online service) & Chen, T. (1969). Research in protozoology: In four volumes. Pergamon.

Chicago Style (17th ed.) Citation

ScienceDirect (Online service) and Tze-tuan Chen. Research in Protozoology: In Four Volumes. Oxford: Pergamon, 1969.

MLA (9th ed.) Citation

ScienceDirect (Online service) and Tze-tuan Chen. Research in Protozoology: In Four Volumes. Pergamon, 1969.

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