Cita APA

Butterfield, H. M. 1. (1955). Orchids for the California amateur. [California]: University of California, College of Agriculture, Agricultural Experiment Station and Extension Service.

Citación estilo Chicago

Butterfield, Harry Morton 1887-. Orchids for the California Amateur. [California]: University of California, College of Agriculture, Agricultural Experiment Station and Extension Service, 1955.

Cita MLA

Butterfield, Harry Morton 1887-. Orchids for the California Amateur. [California]: University of California, College of Agriculture, Agricultural Experiment Station and Extension Service, 1955.