Hole, R. (2023). Bark-boring beetle attack in the coniferous forest of the Simla catchment area, 1907–1911. Superintendent Government Printing.
Chicago-viite (17. p.)Hole, R.S. Bark-boring Beetle Attack in the Coniferous Forest of the Simla Catchment Area, 1907–1911. Superintendent Government Printing, 2023.
MLA-viite (9. p.)Hole, R.S. Bark-boring Beetle Attack in the Coniferous Forest of the Simla Catchment Area, 1907–1911. Superintendent Government Printing, 2023.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.