APA-Zitierstil (7. Ausg.)

Sutherland, H. (1934). A time to keep: By Halliday Sutherland. Morrow.

Chicago-Zitierstil (17. Ausg.)

Sutherland, Halliday. A Time to Keep: By Halliday Sutherland. New York: Morrow, 1934.

MLA-Zitierstil (8. Ausg.)

Sutherland, Halliday. A Time to Keep: By Halliday Sutherland. Morrow, 1934.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.