Cita APA

Johnston, I. M. 1. The preparation of botanical specimens for the herbarium. Boston, Mass, U. S. A.: Tha Arnold Arboretum of Harvard University.

Citación estilo Chicago

Johnston, Ivan Murray 1898-1960. The Preparation of Botanical Specimens for the Herbarium. Boston, Mass, U. S. A.: Tha Arnold Arboretum of Harvard University.

Cita MLA

Johnston, Ivan Murray 1898-1960. The Preparation of Botanical Specimens for the Herbarium. Boston, Mass, U. S. A.: Tha Arnold Arboretum of Harvard University.