BIBLIOGRAFIA PASSIFLORA, Flos Passionis, fiore della passione di M. Vecchia

Ellsword P. Killip,
THE AMERICAN SPECIES OF PASSIFLORACEAE,
Field Museum Natural History,
Chicago, 1938.

Guglielmo Betto.
I FRUTTI TROPICALI IN ITALIA
Rizzoli Editore, Collana l'Ornitorinco, 1982

Guglielmo Betto.
LE PIANTE RAMPICANTI,
Rizzoli Editore, Collana l'Ornitorinco, 1986

John Vanderplank,
PASSION FLOWERS AND PASSION FRIUTS,
Cassel Publishers Limited,
London 1991.

Peter Klock,
DAS GROSSE BUCH DER PASSIONSBLUMEN,
Lagestroemia Verlag, Hamburg 1996.

John Vanderplank,
PASSION FLOWERS,
Regent Publishing Services
Hong Kong 1996.

Bettina & Torsten Ulmer,
POSSIONSBLUMEN Eine faszienierende Gattung,
LaupenmΓΌhlen Druck, Witten, 1997.

Torsten Ulmer & John M. MacDougal,
PASSIFLORA Passionflowers of the World,
Timber Press, Portland  - Cambridge, 2004.

Bettina & Torsten Ulmer,
FARBATLAS PASSIONSBLUMEN,
Formosa Verlag, Wittem 2005.