APA

Hubbard C. E., Sampson J., . (1992). Grasses : a guide to their structure, identification, uses, and distribution in the British Isles. London: Penguin Books.

Chicago

Hubbard Charles Edward, Sampson Joan, . 1992. Grasses : a guide to their structure, identification, uses, and distribution in the British Isles. London: Penguin Books.

Harvard

Hubbard C. E., Sampson J., . (1992). Grasses : a guide to their structure, identification, uses, and distribution in the British Isles. London: Penguin Books.

MLA

Hubbard Charles Edward, Sampson Joan, . Grasses : a guide to their structure, identification, uses, and distribution in the British Isles. London: Penguin Books. 1992.