Bold, H. C. (1964). The plant kingdom (Segunda edición.). Prentice-Hall.
Chicago Style (17th ed.) CitationBold, Harold C. The Plant Kingdom. Segunda edición. Englewood Cliffs: Prentice-Hall, 1964.
MLA (9th ed.) CitationBold, Harold C. The Plant Kingdom. Segunda edición. Prentice-Hall, 1964.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.