Citazione Stile APA (7a Edizione)

Hopler, T., & Hopler, M. (1993). Reaching the World Next Door: How to spread the Gospel in the midst of many cultures. Inter-Varsity.

Citazione stile Chigago Style (17a edizione)

Hopler, Thom, e Marcia Hopler. Reaching the World Next Door: How to Spread the Gospel in the Midst of Many Cultures. Illinois: Inter-Varsity, 1993.

Citatione MLA (9a ed.)

Hopler, Thom, e Marcia Hopler. Reaching the World Next Door: How to Spread the Gospel in the Midst of Many Cultures. Inter-Varsity, 1993.