Mon-Khmer Studies, 28, 1-18. Hanoi tones from two different speakers: Image:VietnameseToneHanoi.png Image:VietnameseToneHanoi2.png A more schematic, general,
Hanoi speaker's tones: Image:VietnameseToneHanoi2.png A non-Hanoi NorthernVietnamese speaker's tones: Image:VietnameseToneNorthern.png A more schematic
Attribution-Share Alike 4.0 truetrue English Phonetic diagram of the Vietnamese ton "nặng" (northern dialect) according to Hwa-Froelich & Hodson (2002)