APA (7th ed.) Zitazioa

(1984). A simple model for estimating total and merchantable tree heights / Alan R. Ek, Earl T. Birdsall, and Rebecca J. Spears.

Chicago Style (17th ed.) Zitazioa

A Simple Model for Estimating Total and Merchantable Tree Heights / Alan R. Ek, Earl T. Birdsall, and Rebecca J. Spears. 1984.

MLA (9th ed.) Zitazioa

A Simple Model for Estimating Total and Merchantable Tree Heights / Alan R. Ek, Earl T. Birdsall, and Rebecca J. Spears. 1984.