Cita APA (7a ed.)

Hugo s Simplified System. (1950). German grammar simplified and easy and rapid self-instructor, exercises and vocabularies, with the pronunciation exactly imitated. Hugo s Language Institute.

Cita Chicago Style (17a ed.)

Hugo s Simplified System. German Grammar Simplified and Easy and Rapid Self-instructor, Exercises and Vocabularies, with the Pronunciation Exactly Imitated. Londres: Hugo s Language Institute, 1950.

Cita MLA (8a ed.)

Hugo s Simplified System. German Grammar Simplified and Easy and Rapid Self-instructor, Exercises and Vocabularies, with the Pronunciation Exactly Imitated. Hugo s Language Institute, 1950.