APA (7th ed.) Citation

Engelmann, G. (1858). Cactaceae of the boundary. United States and Mexican Boundary Survey.

Chicago Style (17th ed.) Citation

Engelmann, Georg. Cactaceae of the Boundary. Washington: United States and Mexican Boundary Survey, 1858.

MLA (9th ed.) Citation

Engelmann, Georg. Cactaceae of the Boundary. United States and Mexican Boundary Survey, 1858.

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