APA-Zitierstil (7. Ausg.)

Kunkel, G., & Kunkel, M. A. (1965). The trees of Liberia: Field notes on the more important trees of the Liberian forests, and a field identification key. BLV.

Chicago-Zitierstil (17. Ausg.)

Kunkel, Günther, und Mary Anne Kunkel. The Trees of Liberia: Field Notes on the More Important Trees of the Liberian Forests, and a Field Identification Key. München u.a: BLV, 1965.

MLA-Zitierstil (9. Ausg.)

Kunkel, Günther, und Mary Anne Kunkel. The Trees of Liberia: Field Notes on the More Important Trees of the Liberian Forests, and a Field Identification Key. BLV, 1965.