Fortification -- Japan

Chikujō hiwa

Dobashi Jijū.

Shinshiten chūsei jōkaku kenkyū ronshū

Murata Shūzō hen.

Nihon chikujōshi: kindai no engan chikujō to yōkan

Jōhōji Asami cho

Nihon no shiro kōbō no senryaku

Fujisaki Sadahisa cho.

Nihon kodai no tojō to kenchiku

Sawamura Masashi.

Shiro no rekishi

Toba Masao cho.

Tsu, tomari, shuku

Amino Yoshihiko ... [et al.] ; Chūsei Toshi Kenkyūkai hen.

Shokuhō-kei jōkaku no keisei

Senda Yoshiharu.

Nishi Nihon kodai sanjo no kenkyu (Nihon jokakushi kenkyu sosho)

Fujio Oda

Nihon no kojō

Sadahisa Fujisaki