Mills, B. (2014). Uma viagem espiritual. Presença.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিMills, Billy. Uma Viagem Espiritual. Presença, 2014.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিMills, Billy. Uma Viagem Espiritual. Presença, 2014.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.