Gaya APA

Herberger, J. 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, 1997. Textbook.