Gaya APA

Blackman, R, L., Eastop, V. (1984). Aphids on The World's Crops : An Identification Guide . Chichester: John Wiley and Sons, Inc.

Gaya MLA

Blackman, R., L.., Eastop, V.F. "Aphids on The World's Crops : An Identification Guide". Chichester: John Wiley and Sons, Inc, 1984. Text.