APA (7th ed.) Citation

Thompson, D. W. (1909). Pycnogonida. Macmillan & Co.

Chicago Style (17th ed.) Citation

Thompson, D'Arcy W. Pycnogonida. London: Macmillan & Co, 1909.

MLA (9th ed.) Citation

Thompson, D'Arcy W. Pycnogonida. Macmillan & Co, 1909.

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