APA

Graef H. C., . (1966). Adult Christianity. Paulist, N. Y: Deus Books.

Chicago

Graef Hilda C, . 1966. Adult Christianity. Paulist, N. Y: Deus Books.

Harvard

Graef H. C., . (1966). Adult Christianity. Paulist, N. Y: Deus Books.

MLA

Graef Hilda C, . Adult Christianity. Paulist, N. Y: Deus Books. 1966.