APA Style

ROBBINS, A. (1983). Provenance regions for Pinus caribaea Morelet and Pinus oocarpa Schiede within the Republic of Honduras: a preliminary delineation . : University of Oxford.

MLA Style

ROBBINS, A.M.J.. "Provenance regions for Pinus caribaea Morelet and Pinus oocarpa Schiede within the Republic of Honduras: a preliminary delineation". : University of Oxford, 1983. Electronic resources.