APA (7th ed.) Citation

Bartsch, P. (1932). The Philippine land mollusks of the genus Opisthoporus. Government Print. Office.

Chicago Style (17th ed.) Citation

Bartsch, Paul. The Philippine Land Mollusks of the Genus Opisthoporus. Washington, DC: Government Print. Office, 1932.

MLA (9th ed.) Citation

Bartsch, Paul. The Philippine Land Mollusks of the Genus Opisthoporus. Government Print. Office, 1932.

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