@article{700578,
     title = {Remarks on free objects in categories},
     booktitle = {General Topology and Its Relations to Modern Analysis and Algebra},
     series = {GDML\_Books},
     publisher = {Academia Publishing House of the Czechoslovak Academy of Sciences},
     address = {Praha},
     year = {1971},
     pages = {239-243},
     mrnumber = {MR0280566},
     zbl = {0278.18004},
     url = {http://dml.mathdoc.fr/item/700578}
}

Shukla, W. Remarks on free objects in categories, dans General Topology and Its Relations to Modern Analysis and Algebra, GDML_Books,  (1971), pp. 239-243. http://gdmltest.u-ga.fr/item/700578/