APA (7th ed.) Citation

Achelis, E. (1959). The calendar for the modern age. Nelson.

Chicago Style (17th ed.) Citation

Achelis, Elisabeth. The Calendar for the Modern Age. New York: Nelson, 1959.

MLA (9th ed.) Citation

Achelis, Elisabeth. The Calendar for the Modern Age. Nelson, 1959.

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