Robinson, J. (1994). Bridges to heaven: How well-known seekers define and deepen their connection with God. Stillpoint Pub..
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Robinson, Jonathan. Bridges to Heaven: How Well-known Seekers Define and Deepen Their Connection with God. Walpole, N.H.: Stillpoint Pub., 1994.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Robinson, Jonathan. Bridges to Heaven: How Well-known Seekers Define and Deepen Their Connection with God. Stillpoint Pub., 1994.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.