APA-Zitierstil (7. Ausg.)

Clifton, R. T. F. (1999). Geranium family species check-list (4. ed., issue 4.). Geraniaceae Group.

Chicago-Zitierstil (17. Ausg.)

Clifton, Richard Timothy Fred. Geranium Family Species Check-list. 4. ed., issue 4. Dover: Geraniaceae Group, 1999.

MLA-Zitierstil (9. Ausg.)

Clifton, Richard Timothy Fred. Geranium Family Species Check-list. 4. ed., issue 4. Geraniaceae Group, 1999.