APA (7th ed.) Citation

Roy, S. K. (1933). A new Devonian trilobite from southern Illinois. [publisher not identified].

Chicago Style (17th ed.) Citation

Roy, Sharat Kumar. A New Devonian Trilobite from Southern Illinois. Chicago: [publisher not identified], 1933.

MLA (9th ed.) Citation

Roy, Sharat Kumar. A New Devonian Trilobite from Southern Illinois. [publisher not identified], 1933.

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