APA (7th ed.) Citation

Karvonen, J. (1971). The enrichment of vocabulary and the basic skills of verbal communication.

Chicago Style (17th ed.) Citation

Karvonen, Juhani. The Enrichment of Vocabulary and the Basic Skills of Verbal Communication. Jyväskylä, 1971.

MLA (9th ed.) Citation

Karvonen, Juhani. The Enrichment of Vocabulary and the Basic Skills of Verbal Communication. 1971.

Warning: These citations may not always be 100% accurate.