If the publication has no author data, refer to the publisher organisation. When referring to the publisher’s name for the second time, you can use the abbreviation of the publisher’s name:
(International Organization for Standardization (ISO), 2019, p. 56)
(ISO 2019, p. 65)
If the publisher is not recognised, refer to the name/title of the source:
(Domestic market price of pork, n.d.)