Gaya APA

Lehnus, D, J. (). Who's on time?: a study of time's covers from march 3, 1923 to january 3, 1977.-- . : .

Gaya MLA

Lehnus, Donald, J.. "Who's on time?: a study of time's covers from march 3, 1923 to january 3, 1977.--". : , . Buku.