1. Sources

Alongside more orthodox and mainstream measures, Bōryaku includes use of unorthodox strategies and tactics, as well as manipulation of politics and exploitation of other current events to assist in subtle influence of the opponent.

Sources

• Dr. Hatsumi, M. (1981) Ninjutsu: History and Tradition. Burbank, CA: Unique Publications. {{ISBN|0-86568-027-2}}

• Edward R.G.R. Evans
• Edward R. Hays
• Edward R. Hills House
• Edward Rice
• Edward Richard Littleton, 2nd Baron Hatherton
• Edward Richard Russell, 1st Baron Russell of Liverpool
• Edward Richards
• Edward Richard Stewart
• Edward Richard William Stanley, 19th Earl of Derby
• Edward Riche
• Edward Ridley Colborne Bradford
• Edward Ridsdale
• Edward Ridz-Smigly
• Edward Riegelmann
• Edward Righton
• Edward Righton junior
• Edward Righton senior
• Edward Riley (pastoralist)
• Edward Rimbault
• Edward Ringold
• Edward Riou
• Edward River
• Edward River Aboriginal Mission Queensland
• Edward River Airport
• Edward River (Queensland)