Cita APA (7th ed.)

Baumann, P. (1970). Collecting antique Marbles. Mid-America Book Company.

Cita Chicago (17th ed.)

Baumann, Paul. Collecting Antique Marbles. Leon: Mid-America Book Company, 1970.

Cita MLA (8th ed.)

Baumann, Paul. Collecting Antique Marbles. Mid-America Book Company, 1970.