Gaya APA
Dicht, R., Lüthy, A.
(2005).
Coryphantha
(
1st ed)
.
Berlin, Heidelberg:
Springer.
Gaya MLA
Dicht, Reto.., Lüthy, Adrian..
"Coryphantha".
1st ed
Berlin, Heidelberg:
Springer,
2005.
E Book.