Unknown. (2023). Report of the Forest Products Research Board with the Report of the Director of Forest Products Research for the Period Ended 31st December, 1929. Forest Research Institute.
Չիկագոյի ոճի (17րդ խմբ.) մեջբերումUnknown. Report of the Forest Products Research Board with the Report of the Director of Forest Products Research for the Period Ended 31st December, 1929. Forest Research Institute, 2023.
MLA (9րդ խմբ.) ՄեջբերումUnknown. Report of the Forest Products Research Board with the Report of the Director of Forest Products Research for the Period Ended 31st December, 1929. Forest Research Institute, 2023.
Զգուշացում. այս մեջբերումները միշտ չէ, որ կարող են 100% ճշգրիտ լինել.