APA   Click to copy
Darwin, C. (1862). On the Various Contrivances by Which British and Foreign Orchids Are Fertilised by Insects, and On the Good Effects of Intercrossing.

Chicago/Turabian   Click to copy
Darwin, Charles. On the Various Contrivances by Which British and Foreign Orchids Are Fertilised by Insects, and On the Good Effects of Intercrossing, 1862.

MLA   Click to copy
Darwin, Charles. On the Various Contrivances by Which British and Foreign Orchids Are Fertilised by Insects, and On the Good Effects of Intercrossing. 1862.

@book{charles1862a,
  title = {On the Various Contrivances by Which British and Foreign Orchids Are Fertilised by Insects, and On the Good Effects of Intercrossing},
  year = {1862},
  month = may,
  day = {15},
  author = {Darwin, Charles},
  month_numeric = {5}
}