APA (7th ed.) Citation

Achelis, E. (1937). The world calendar: Addresses and occasional papers chronologically arranged on the progress of calendar reform since 1930. G. P. Putnam's sons.

Chicago Style (17th ed.) Citation

Achelis, Elisabeth. The World Calendar: Addresses and Occasional Papers Chronologically Arranged on the Progress of Calendar Reform Since 1930. New York: G. P. Putnam's sons, 1937.

MLA (9th ed.) Citation

Achelis, Elisabeth. The World Calendar: Addresses and Occasional Papers Chronologically Arranged on the Progress of Calendar Reform Since 1930. G. P. Putnam's sons, 1937.