APA

Marshall W. T., Bock T. M., . (1941). Cactaceae with illustrated keys of all tribes, sub-tribes and genera / W. Taylor Marshall; Thor Methven Bock. Pasadena, California: Abbey Garden Press.

Chicago

Marshall W Taylor, Bock Thor Methven, . 1941. Cactaceae with illustrated keys of all tribes, sub-tribes and genera / W. Taylor Marshall; Thor Methven Bock. Pasadena, California: Abbey Garden Press.

Harvard

Marshall W. T., Bock T. M., . (1941). Cactaceae with illustrated keys of all tribes, sub-tribes and genera / W. Taylor Marshall; Thor Methven Bock. Pasadena, California: Abbey Garden Press.

MLA

Marshall W Taylor, Bock Thor Methven, . Cactaceae with illustrated keys of all tribes, sub-tribes and genera / W. Taylor Marshall; Thor Methven Bock. Pasadena, California: Abbey Garden Press. 1941.