Cita APA (7th ed.)

Liebster, H., & Fragner, J. (1964). Vitamine. Gustav Fischer.

Cita Chicago (17th ed.)

Liebster, H., i Jiri Fragner. Vitamine. Jena: Gustav Fischer, 1964.

Cita MLA (8th ed.)

Liebster, H., i Jiri Fragner. Vitamine. Gustav Fischer, 1964.