Cita APA (7a ed.)

De Wild, J. H. Elements of show card writing A course of instruction on how to make business-building show cards.

Cita Chicago Style (17a ed.)

De Wild, John H. Elements of Show Card Writing A Course of Instruction on How to Make Business-building Show Cards.

Cita MLA (9a ed.)

De Wild, John H. Elements of Show Card Writing A Course of Instruction on How to Make Business-building Show Cards.