APA

Snowden J. H., Douglass E. L., .The Douglass Sunday school lessons. New York: Macmillan Co.

Chicago

Snowden James H, Douglass Earl L, .The Douglass Sunday school lessons. New York: Macmillan Co.

Harvard

Snowden J. H., Douglass E. L., .The Douglass Sunday school lessons. New York: Macmillan Co.

MLA

Snowden James H, Douglass Earl L, .New York: Macmillan Co. .