APA (7th ed.) Citation

Womersley, J. S. (1981). Plant collecting and herbarium development: A manual. Food and Agriculture Organization of the United Nations.

Chicago Style (17th ed.) Citation

Womersley, J. S. Plant Collecting and Herbarium Development: A Manual. Rome: Food and Agriculture Organization of the United Nations, 1981.

MLA (9th ed.) Citation

Womersley, J. S. Plant Collecting and Herbarium Development: A Manual. Food and Agriculture Organization of the United Nations, 1981.