APA (7th ed.) Citation

Gruber, M. (1969). The Source of the Biblical Sabbath.

Chicago Style (17th ed.) Citation

Gruber, Mayer. The Source of the Biblical Sabbath. 1969.

MLA (8th ed.) Citation

Gruber, Mayer. The Source of the Biblical Sabbath. 1969.

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