Cita APA

Stevens, G. C., & Matthew, K. K. (1989). Quercus costaricensis Liebm. and the problem of multi-seeded acorns.

Chicago Style Citation

Stevens, George C., i Kathryn K. Matthew. Quercus Costaricensis Liebm. and the Problem of Multi-seeded Acorns. 1989.

Cita MLA

Stevens, George C., i Kathryn K. Matthew. Quercus Costaricensis Liebm. and the Problem of Multi-seeded Acorns. 1989.

Atenció: Aquestes cites poden no estar 100% correctes.