APA (7th ed.) Citation

Delattre, P. (1965). Comparing the phonetic features of English, French, German and Spanish: An interim report. Julius Groos.

Chicago Style (17th ed.) Citation

Delattre, Pierre. Comparing the Phonetic Features of English, French, German and Spanish: An Interim Report. Heidelberg: Julius Groos, 1965.

MLA (9th ed.) Citation

Delattre, Pierre. Comparing the Phonetic Features of English, French, German and Spanish: An Interim Report. Julius Groos, 1965.