You can read Dhanurveda from sanskritdocuments.org in Sanskrit in Devanagari and in the transliterated form.
** ॥ धनुर्वेद ॥**
अथ धनुर्वेदः
ईश्वरोक्ताद्धनुर्वेदाद्व्यासस्यापि सुभाषितात् ।
पदान्याकृष्य रचितो ग्रन्थः संक्षेपतो मया ॥ १॥
English translation for that is available at here.
You can get authentic/original scripts with accent (Swara) from vedicreserve:
2. Śhiva Dhanur Veda of Maharshi Śhārṅgadhara (Same as mentioned for sanskritdocuments.org)