APA (7th ed.) Citation

Gretler, A. (1972). The training of adult midldle-level personnel. Unesco.

Chicago Style (17th ed.) Citation

Gretler, Armin. The Training of Adult Midldle-level Personnel. Unesco, 1972.

MLA (8th ed.) Citation

Gretler, Armin. The Training of Adult Midldle-level Personnel. Unesco, 1972.

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