↑Janzen DH. 1972 Protection of Barteria (Passifloraceae) by Pachysima ants (Pseudomyrmecinea) in a Nigerian rain forest. Ecology 53. (5): 885-892 (1972) Illustrations Geog=5 Systematics: ANGIOSPERMAE (PASSIFLORACEAE: BARTERIA) (KR, 197203812)., KBD Kew Bibliographic Databases Detailed results.htm. Kraljevski botanički vrtovi u Kewu. Inačica izvorne stranice arhivirana 5. listopada 2016. Pristupljeno 4. listopada 2016.
↑Ecology Daniel H. Janzen; Protection of Barteria (Passifloraceae) by Pachysima ants (Pseudomyrmecinae) in a Nigerian rain forest
↑ScienceDirect.com - Acta Oecologica Champlain Djiéto-Lordon, Alain Dejean, Marc Gibernau, Martine Hossaert-McKey, Doyle McKey: Symbiotic mutualism with a community of opportunistic ants: protection, competition, and ant occupancy of the myrmecophyte Barteria nigritana (Passifloraceae)