Gaya APA
James, H. et al. (1997).
World weeds : natural histories and distribution / LeRoy Holm ...[dkk] .
New York:
John Wiley n Sons.
Gaya MLA
Herberger, James. et al.
"World weeds : natural histories and distribution / LeRoy Holm ...[dkk]".
New York:
John Wiley n Sons,
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Textbook.