APA Citatie

WILLIS J.C. (1960). A DICTIONARY OF THE FLOWERING PLANTS AND FERNS (6.). CAMBRIDGE :AT THE UNIVERSITY PRESS.

Chicago Style citaat

WILLIS J.C. A DICTIONARY OF THE FLOWERING PLANTS AND FERNS. 6. USA: CAMBRIDGE :AT THE UNIVERSITY PRESS, 1960.

MLA citatie

WILLIS J.C. A DICTIONARY OF THE FLOWERING PLANTS AND FERNS. 6. CAMBRIDGE :AT THE UNIVERSITY PRESS, 1960.