Cita APA (7th ed.)

Penner, T., & Kraut, R. (1989). Nature, knowledge and virtue: Essays in memory of Joan Kung. Academic Printing and Publishing.

Cita Chicago (17th ed.)

Penner, Terry, i Richard Kraut. Nature, Knowledge and Virtue: Essays in Memory of Joan Kung. Edmonton: Academic Printing and Publishing, 1989.

Cita MLA (9th ed.)

Penner, Terry, i Richard Kraut. Nature, Knowledge and Virtue: Essays in Memory of Joan Kung. Academic Printing and Publishing, 1989.