Gaya APA

Whitehead, E, E, &, W, J, D. (1984). Seasons of strenght: New visions of adult Christian maturing. . Garden City: Garden City Doubleday & Co.

Gaya MLA

Whitehead, Evelyn, Eaton, &, Whitehead,, James, D.. "Seasons of strenght: New visions of adult Christian maturing. ". Garden City: Garden City Doubleday & Co, 1984. Buku.