Spenser St John, FRGS, FES text London Smith, Elder and Co 1863 Uraian tentang adat istiiadat, kepercayaan dan kehidupan bermasyarakat beberapa kelompok suku Dayak di Kalimantan Utara berdasarkan lingkungn tempat tinggal mereka. Descriptions on the customs, beliiefs, and sociallife of several Dayak tribes in Northern Borneo according to their environtments Ekspedisi -- Kalimantan