APA-Zitierstil (7. Ausg.)

Keay, R. W., Onochie, C. F., & Stanfield, D. P. (1964). Nigerian trees (Rev. and reprinted.). Fed. Dep. of Forest Research.

Chicago-Zitierstil (17. Ausg.)

Keay, Ronald W., C. F. Onochie, und D. P. Stanfield. Nigerian Trees. Rev. and reprinted. Ibadan: Fed. Dep. of Forest Research, 1964.

MLA-Zitierstil (9. Ausg.)

Keay, Ronald W., et al. Nigerian Trees. Rev. and reprinted. Fed. Dep. of Forest Research, 1964.