APA Citation

Gravell, D. W. (1933). Tertiary larger Foraminifera of Venezuela (with six plates). City of Washington: Smithsonian Institution.

Chicago Style Citation

Gravell, Donald Winchester. Tertiary Larger Foraminifera of Venezuela (with Six Plates). City of Washington: Smithsonian Institution, 1933.

MLA Citation

Gravell, Donald Winchester. Tertiary Larger Foraminifera of Venezuela (with Six Plates). City of Washington: Smithsonian Institution, 1933.

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