@article{journal,
author = {Mu{\~n}iz, R. S.},
title = {Methodology used for the study of early mother-infant behaviour in Bornean orangutan (Pongo p. pygmaeus Linnaeus, 1760)},
year = {1981 (1983)},
volume = {7},
pages = {213--219},
journal = {Miscel·l{\`a}nia Zool{\`o}gica}
}